Trazodone Hydrochloride (trazodone hydrochloride 150 mg) Dailymed
Generic: trazodone hydrochloride is used for the treatment of Depressive Disorder Sleep Initiation and Maintenance Disorders
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trazodone hydrochloride 150 mg - apo t150 50 50 50 oval white
trazodone hydrochloride 100 mg - apo t100 round white
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Boxed Warning
Warning: Suicidality And Antidepressant Drugs
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Warning: Suicidality And Antidepressant Drugs
Antidepressants increased the risk compared to placebo of suicidal thinking and behavior (suicidality) in children, adolescents, and young adults in short-term studies of major depressive disorder (MDD) and other psychiatric disorders. Anyone considering the use of trazodone hydrochloride tablets or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. Short-term studies did not show an increase in the risk of suicidality with antidepressants compared to placebo in adults beyond age 24; there was a reduction in risk with antidepressants compared to placebo in adults aged 65 and older. Depression and certain other psychiatric disorders are themselves associated with increases in the risk of suicide. Patients of all ages who are started on antidepressant therapy should be monitored appropriately and observed closely for clinical worsening, suicidality, or unusual changes in behavior. Families and caregivers should be advised of the need for close observation and communication with the prescriber. Trazodone hydrochloride tablets are not approved for use in pediatric patients [see Warnings and Precautions ( 5.1) and Patient Counseling Information ( 17.1)].
WARNING: SUICIDALITY AND ANTIDEPRESSANT DRUGS
See full prescribing information for complete boxed warning.
Increased risk of suicidal thinking and behavior in children, adolescents and young adults taking antidepressants for major depressive disorder (MDD) and other psychiatric disorders. Trazodone is not approved for use in pediatric patients ( 5.1 ).
Recent Major Changes Section
Warnings and Precautions (5.12 ) 08/2014
1 Indications And Usage
Trazodone hydrochloride tablets, USP are indicated for the treatment of major depressive disorder (MDD) in adults. The efficacy of trazodone hydrochloride tablets, USP has been established in trials with the immediate release formulation of trazodone [see Clinical Studies (14)].
Trazodone hydrochloride tablets, USP are indicated for the treatment of major depressive disorder (1 ).
- Efficacy was established in trials of trazodone immediate release formulation in patients with major depressive disorder (
14 ).
2 Dosage And Administration
The dosage should be initiated at a low-dose and increased gradually, noting the clinical response and any evidence of intolerance. Occurrence of drowsiness may require the administration of a major portion of the daily dose at bedtime or a reduction of dosage. Trazodone hydrochloride tablets should be taken shortly after a meal or light snack.
Dose Selection
An initial dose of 150 mg/day in divided doses is suggested. The dose may be increased by 50 mg/day every 3 to 4 days. The maximum dose for outpatients usually should not exceed 400 mg/day in divided doses. Inpatients (i.e., more severely depressed patients) may be given up to but not in excess of 600 mg/day in divided doses
- Once an adequate response has been achieved, dosage may be gradually reduced, with subsequent adjustment depending on therapeutic response.
- Patients should be monitored for withdrawal symptoms when discontinuing treatment with trazodone hydrochloride tablets. The dose should be gradually reduced whenever possible [see Warnings and Precautions ( 5.12)] .
Maintenance Treatment
The efficacy of trazodone hydrochloride tablets for the maintenance treatment of MDD has not been evaluated. While there is no body of evidence available to answer the question of how long a patient treated with trazodone hydrochloride tablets should continue the drug, it is generally recommended that treatment be continued for several months after an initial response. Patients should be maintained on the lowest effective dose and be periodically reassessed to determine the continued need for maintenance treatment.
Important Administration Instructions
Trazodone hydrochloride tablets are scored to provide flexibility in dosing.
Trazodone hydrochloride tablets can be swallowed whole or administered as a half tablet by breaking the tablet along the score line.
- Starting dose: 150 mg in divided doses daily. May be increased by 50 mg per day every three to four days. Maximum dose: 400 mg per day in divided doses (
2 ).- Trazodone hydrochloride tablets should be taken shortly after a meal or light snack (
2 ).- Tablets should be swallowed whole or broken in half along the score line, and should not be chewed or crushed (
2 ).- When discontinued, gradual dose reduction is recommended (
2 ).
3 Dosage Forms And Strengths
Trazodone hydrochloride tablets are available in the following strengths:
50 mg : white, round, biconvex, tablets. Engraved “APO” bisect “T50” on one side, other side plain.
100 mg: white, round, biconvex, tablets. Engraved “APO” bisect “T100” on one side, other side plain.
150 mg: white, oval, fl at faced beveled-edge tablets with a full bisect and 2 partial trisects. Engraved “APO” bisect “T150” on one side, and “50 50 50” on the other side.
300 mg: white, oval, fl at faced beveled-edge tablets with a full bisect and 2 partial trisects. Engraved “APO” bisect “T300” on one side, and “100 100 100” on the other side with the middle “100” perpendicular to the others.
Bisectable tablets of 50mg, 100mg ,150 mg and 300 mg (3 ).
4 Contraindications
None.
None (4 ).
5 Warnings And Precautions
- Clinical Worsening/Suicide Risk: Monitor for clinical worsening and suicidal thinking and behavior (
5.1 ).- Serotonin Syndrome or Neuroleptic Malignant Syndrome-Like Reactions: Have been reported with antidepressants. Discontinue trazodone hydrochloride tablets and initiate supportive treatment (
5.2 ,7 ).- Activation of Mania/Hypomania: Screen for bipolar disorder and monitor for mania/hypomania (
5.3 ).- QT Prolongation: Increases the QT interval. Avoid use with drugs that also increase the QT interval and in patients with risk factors for prolonged QT interval (
5.4 ).- Use in Patients With Heart Disease: Use with caution in patients with cardiac disease (
5.5 ).- Orthostatic Hypotension and Syncope: Have occurred. Warn patients of risk and symptoms of hypotension (
5.6 ).- Abnormal Bleeding: May increase the risk of bleeding. Use with NSAIDs, aspirin, or other drugs that affect coagulation may compound this risk (
5.7 ,7 ).- Interaction With MAOIs: Do not use concomitantly or within 14 days of monoamine oxidase inhibitors (
5.8 ,7 ).- Priapism: Has occurred. Warn male patients of this risk and how/when to seek medical attention (
5.9 ).- Hyponatremia: Can occur in association with SIADH (
5.10 ).- Potential for Cognitive and Motor Impairment: Has potential to impair judgment, thinking, and motor skills. Advise patients to use caution when operating machinery (
5.11 ).- Angle-Closure Glaucoma: Angle closure glaucoma has occurred in patients with in treated anatomically narrow angles treated with antidepressants. (
5.12 )- Discontinuation Symptoms: May occur with abrupt discontinuation and include anxiety and sleep disturbance. Upon discontinuation, taper trazodone hydrochloride tablets and monitor for symptoms (
5.13 ).5.1 Clinical Worsening and Suicide Risk
Patients with major depressive disorder (MDD), both adult and pediatric, may experience worsening of their depression and/or the emergence of suicidal ideation and behavior (suicidality) or unusual changes in behavior, whether or not they are taking antidepressant medications, and this risk may persist until significant remission occurs. Suicide is a known risk of depression and certain other psychiatric disorders and these disorders themselves are the strongest predictors of suicide. There has been a long standing concern, however, that antidepressants may have a role in inducing worsening of depression and the emergence of suicidality in certain patients during the early phases of treatment. Pooled analyses of short-term placebo-controlled trials of antidepressant drugs (SSRIs and others) showed that these drugs increase the risk of suicidal thinking and behavior (suicidality) in children, adolescents, and young adults (ages 18 to 24) with MDD and other psychiatric disorders. Short-term studies did not show an increase in the risk of suicidality with antidepressants compared to placebo in adults beyond age 24; there was a reduction with antidepressants compared to placebo in adults aged 65 and older.
The pooled analyses of placebo-controlled trials in children and adolescents with MDD, obsessive compulsive disorder (OCD), or other psychiatric disorders included a total of 24 short-term trials of 9 antidepressant drugs in over 4,400 patients. The pooled analyses of placebo-controlled trials in adults with MDD or other psychiatric disorders included a total of 295 short-term trials (median duration of 2 months) of 11 antidepressant drugs in over 77,000 patients. There was considerable variation in risk of suicidality among drugs, but a tendency toward an increase in the younger patients for almost all drugs studied. There were differences in absolute risk of suicidality across the different indications, with the highest incidence in MDD. The risk differences (drug vs. placebo), however, were relatively stable within age strata and across indications. These risk differences (drug-placebo difference in the number of cases of suicidality per 1,000 patients treated) are provided in Table 1.
Table 1 Age Range Drug-Placebo Difference in Number of Cases of Suicidality per 1,000 Patients Treated Increases Compared to Placebo < 18 14 additional cases 18-24 5 additional cases Decreases Compared to Placebo 25-64 1 fewer case ≥ 65 6 fewer cases
No suicides occurred in any of the pediatric trials. There were suicides in the adult trials, but the number was not sufficient to reach any conclusion about drug effect on suicide.
It is unknown whether the suicidality risk extends to longer-term use, i.e., beyond several months. However, there is substantial evidence from placebo-controlled maintenance trials in adults with depression that the use of antidepressants can delay the recurrence of depression.
All patients being treated with antidepressants for any indication should be monitored appropriately and observed closely for clinical worsening, suicidality, and unusual changes in behavior, especially during the initial few months of a course of drug therapy, or at times of dose changes, either increases or decreases.
The following symptoms, anxiety, agitation, panic attacks, insomnia, irritability, hostility, aggressiveness, impulsivity, akathisia (psychomotor restlessness), hypomania, and mania, have been reported in adult and pediatric patients being treated with antidepressants for major depressive disorder as well as for other indications, both psychiatric and nonpsychiatric. Although a causal link between the emergence of such symptoms and either the worsening of depression and/or the emergence of suicidal impulses has not been established, there is concern that such symptoms may represent precursors to emerging suicidality.
Consideration should be given to changing the therapeutic regimen, including possibly discontinuing the medication, in patients whose depression is persistently worse, or who are experiencing emergent suicidality or symptoms that might be precursors to worsening depression or suicidality, especially if these symptoms are severe, abrupt in onset, or were not part of the patient's presenting symptoms.
Families and caregivers of patients being treated with antidepressants for major depressive disorder or other indications, both psychiatric and nonpsychiatric, should be alerted about the need to monitor patients for the emergence of agitation, irritability, unusual changes in behavior, and the other symptoms described above, as well as the emergence of suicidality, and to report such symptoms immediately to healthcare providers. Such monitoring should include daily observation by families and caregivers. Prescriptions for trazodone should be written for the smallest quantityof tablets consistent with good patient management, in order to reduce the risk of overdose.
5.2 Serotonin Syndrome or Neuroleptic Malignant Syndrome (NMS)-Like Reactions
The development of a potentially life-threatening serotonin syndrome or neuroleptic malignant syndrome (NMS)-like reactions have been reported with antidepressants alone and may occur with trazodone treatment, but particularly with concomitant use of other serotoninergic drugs (including SSRIs, SNRIs and triptans) and with drugs that impair metabolism of serotonin (including monoamine oxidase inhibitors [MAOIs]), or with antipsychotics or other dopamine antagonists. Serotonin syndrome symptoms may include mental status changes (e.g., agitation, hallucinations, and coma), autonomic instability (e.g., tachycardia, labile blood pressure, and hyperthermia), neuromuscular aberrations (e.g., hyperreflexia, incoordination) and/or gastrointestinal symptoms (e.g., nausea, vomiting, and diarrhea). Serotonin syndrome, in its most severe form, can resemble neuroleptic malignant syndrome, which includes hyperthermia, muscle rigidity, autonomic instability with possible rapid fluctuation of vital signs, and mental status changes.
Treatment with trazodone hydrochloride tablets and any concomitant serotonergic or antidopaminergic agents, including antipsychotics, should be discontinued immediately if the above reactions occur and supportive symptomatic treatment should be initiated.
Trazodone hydrochloride tablets should not be used within 14 days of an MAOI [see Warnings and Precautions ( 5.8) and Drug Interactions ( 7)].
If concomitant treatment with trazodone hydrochloride tablets and an SSRI, SNRI or a 5-hydroxytryptamine receptor agonist (triptan) is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases.
The concomitant use of trazodone hydrochloride tablets with serotonin precursors (such as tryptophan) is not recommended.
5.3 Screening Patients for Bipolar Disorder and Monitoring for Mania/Hypomania
A major depressive episode may be the initial presentation of bipolar disorder. It is generally believed (though not established in controlled trials) that treating such an episode with an antidepressant alone may increase the likelihood of precipitation of a mixed/manic episode in patients at risk for bipolar disorder. Whether any of the symptoms described for clinical worsening and suicide risk represent such a conversion is unknown. However, prior to initiating treatment with an antidepressant, patients with depressive symptoms should be adequately screened to determine if they are at risk for bipolar disorder; such screening should include a detailed psychiatric history, including a family history of suicide, bipolar disorder, and depression. It should be noted that trazodone hydrochloride tablets are not approved for use in treating bipolar depression.
5.4 QT Prolongation and Risk of Sudden Death
Trazodone is known to prolong the QT/QT c interval. Some drugs that prolong the QT/QT c interval can cause torsade de pointes with sudden, unexplained death. The relationship of QT prolongation is clearest for larger increases (20 msec and greater), but it is possible that smaller QT/QT c prolongations may also increase risk, especially in susceptible individuals, such as those with hypokalemia, hypomagnesemia, or a genetic predisposition to prolonged QT/QT c.
Although torsade de pointes has not been observed with the use of trazodone hydrochloride tablets at recommended doses in premarketing trials, experience is too limited to rule out an increased risk. However, there have been postmarketing reports of torsade de pointes with the immediate-release form of trazodone (in the presence of multiple confounding factors), even at doses of 100 mg per day or less.
5.5 Use in Patients With Heart Disease
Trazodone hydrochloride is not recommended for use during the initial recovery phase of myocardial infarction.
Caution should be used when administering trazodone hydrochloride tablets to patients with cardiac disease and such patients should be closely monitored, since antidepressant drugs (including trazodone hydrochloride) may cause cardiac arrhythmias.
QT prolongation has been reported with trazodone therapy [see Warnings and Precautions ( 5.4)] . Clinical studies in patients with preexisting cardiac disease indicate that trazodone hydrochloride may be arrhythmogenic in some patients in that population. Arrhythmias identified include isolated PVCs, ventricular couplets, tachycardia with syncope, and torsade de pointes. Postmarketing events have been reported at doses of 100 mg or less with the immediate-release form of trazodone.
Concomitant administration of drugs that prolong the QT interval or that are inhibitors of CYP3A4 may increase the risk of cardiac arrhythmia.
5.6 Orthostatic Hypotension and Syncope
Hypotension, including orthostatic hypotension and syncope has been reported in patients receiving trazodone hydrochloride. Concomitant use with an antihypertensive may require a reduction in the dose of the antihypertensive drug.
5.7 Abnormal Bleeding
Postmarketing data have shown an association between use of drugs that interfere with serotonin reuptake and the occurrence of gastrointestinal (GI) bleeding. While no association between trazodone and bleeding events, in particular GI bleeding, was shown, patients should be cautioned about potential risk of bleeding associated with the concomitant use of trazodone and NSAIDs, aspirin, or other drugs that affect coagulation or bleeding. Other bleeding events related to SSRIs and SNRIs have ranged from ecchymosis, hematoma, epistaxis, and petechiae to life-threatening hemorrhages.
5.8 Interaction With MAOIs
In patients receiving serotonergic drugs in combination with a monoamine oxidase inhibitor (MAOI), there have been reports of serious, sometimes fatal reactions including hyperthermia, rigidity, myoclonus, autonomic instability with rapid fluctuation in vital signs, and mental status changes that include extreme agitation progressing to delirium and coma. These reactions have also been reported in patients who have recently discontinued antidepressant treatment and have been started on an MAOI. Some cases presented with features resembling neuroleptic malignant syndrome. Furthermore, limited animal data on the effects of combined use of serotonergic antidepressants and MAOIs suggest that these drugs may act synergistically to elevate blood pressure and evoke behavioral excitation. Therefore, it is recommended that trazodone hydrochloride tablets should not be used in combination with an MAOI or within 14 days of discontinuing treatment with an MAOI. Similarly, at least 14 days should be allowed after stopping trazodone hydrochloride tablets before starting an MAOI.
5.9 Priapism
Rare cases of priapism (painful erections greater than 6 hours in duration) were reported in men receiving trazodone. Priapism, if not treated promptly, can result in irreversible damage to the erectile tissue. Men who have an erection lasting greater than 6 hours, whether painful or not, should immediately discontinue the drug and seek emergency medical attention [see Adverse Reactions ( 6.2) and Overdosage ( 10)].
Trazodone should be used with caution in men who have conditions that might predispose them to priapism (e.g., sickle cell anemia, multiple myeloma, or leukemia), or in men with anatomical deformation of the penis (e.g., angulation, cavernosal fibrosis, or Peyronie's disease).
5.10 Hyponatremia
Hyponatremia may occur as a result of treatment with antidepressants. In many cases, this hyponatremia appears to be the result of the syndrome of inappropriate antidiuretic hormone secretion (SIADH). Cases with serum sodium lower than 110 mmol/L have been reported. Elderly patients may be at greater risk of developing hyponatremia with antidepressants. Also, patients taking diuretics or who are otherwise volume-depleted can be at greater risk. Discontinuation of trazodone hydrochloride tablets should be considered in patients with symptomatic hyponatremia and appropriate medical intervention should be instituted.
Signs and symptoms of hyponatremia include headache, difficulty concentrating, memory impairment, confusion, weakness, and unsteadiness, which can lead to falls. Signs and symptoms associated with more severe and/or acute cases have included hallucination, syncope, seizure, coma, respiratory arrest, and death.
5.11 Potential for Cognitive and Motor Impairment
Trazodone hydrochloride tablets may cause somnolence or sedation and may impair the mental and/or physical ability required for the performance of potentially hazardous tasks. Patients should be cautioned about operating hazardous machinery, including automobiles, until they are reasonably certain that the drug treatment does not affect them adversely.
5.12 Angle-Closure Glaucoma
The pupillary dilation that occurs following use of many antidepressant drugs including trazodone hydrochloride - may trigger an angle closure attack in a patient with anatomically narrow angles who does not have a patent iridectomy.
5.13 Discontinuation Symptoms
Withdrawal symptoms including anxiety, agitation and sleep disturbances, have been reported with trazodone. Clinical experience suggests that the dose should be gradually reduced before complete discontinuation of the treatment.
6 Adverse Reactions
The following serious adverse reactions are described elsewhere in the labeling:
- Clinical Worsening and Suicide Risk [see Boxed Warning and Warnings and Precautions ( 5.1)]
- Serotonin Syndrome or NMS-Like Reactions [see Warnings and Precautions ( 5.2)]
- QT Prolongation and Risk of Sudden Death [see Warnings and Precautions ( 5.4)]
- Orthostatic Hypotension [see Warnings and Precautions ( 5.6)]
- Abnormal Bleeding Events [see Warnings and Precautions ( 5.7)]
- Priapism [see Warnings and Precautions ( 5.9)]
- Hyponatremia [see Warnings and Precautions ( 5.10)]
- Cognitive and Motor Impairment [see Warnings and Precautions ( 5.11)]
- Angle-Closure Glaucoma [see Warnings and Precautions ( 5.12)]
- Discontinuation Symptoms [see Warnings and Precautions ( 5.13)]
The most common adverse reactions (reported in ≥ 5% and at twice the rate of placebo) are:
Somnolence/sedation, dizziness, constipation, vision blurred.
Table 2 presents the summary of adverse events (AEs) leading to discontinuation of trazodone hydrochloride tablets treatment with an incidence of at least 1% and at least twice that for placebo.
Table 2: Adverse Reactions With Discontinuation as Action Taken (≥ 1%) Incidence and Incidence 2x Placebo Trazodone N = 202 Somnolence/Sedation 8 (4%) Dizziness 7 (3.5%) Confusional state 2 (1%) Coordination abnormal 2 (1%) Headache 2 (1%) Nausea 2 (1%) Balance disorder/Gait disturbance 2 (1%)
Most common adverse reactions (incidence ≥ 5% and twice that of placebo) are: somnolence/sedation, dizziness, constipation, vision blurred (6 ).
To report SUSPECTED ADVERSE REACTIONS, contact Apotex Corp. at 1-800-706-5575 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
6.1 Clinical Studies Experience
The table below is presented solely to indicate the relative frequency of adverse events reported in representative controlled clinical studies conducted to evaluate the safety and efficacy of trazodone hydrochloride.
The figures cited cannot be used to predict concisely the incidence of untoward events in the course of usual medical practice where patient characteristics and other factors often differ from those which prevailed in the clinical trials. These incidence figures, also, cannot be compared with those obtained from other clinical studies involving related drug products and placebo as each group of drug trials is conducted under a different set of conditions.
Table 3: Adverse Reactions: Percentage of Patients (> 2%) as Observed in Controlled Clinical Studies Outpatients Inpatients Trazodone Placebo Trazodone Placebo Number of Patients 142 95 157 158 % of Patients Reporting Allergic Skin Condition/Edema 2.8 1.1 7 1.3 Autonomic Blurred Vision 6.3 4.2 14.7 3.8 Constipation 7 4.2 7.6 5.7 Dry Mouth 14.8 8.4 33.8 20.3 Cardiovascular Hypertension 2.1 1.1 1.3 * Hypotension 7 1.1 3.8 0 Shortness of Breath * 1.1 1.3 0 Syncope 2.8 2.1 4.5 1.3 Tachycardia/Palpitations 0 0 7 7 CNS Anger/Hostility 3.5 6.3 1.3 2.5 Confusion 4.9 0 5.7 7.6 Decreased Concentration 2.8 2.1 1.3 0 Disorientation 2.1 0 * 0 Dizziness/Light-Headedness 19.7 5.3 28 15.2 Drowsiness 23.9 6.3 40.8 19.6 Exclient 1.1 1.1 5.1 5.7 Fatigue 11.3 4.2 5.7 2.5 Headache 9.9 5.3 19.8 15.8 Insomnia 9.9 10.5 6.4 12 Impaired Memory 1.4 0 * * Nervousness 14.8 10.5 6.4 8.2 Gastrointestinal Abdominal/Gastric Disorder 3.5 4.2 5.7 4.4 Bad Taste in Mouth 1.4 0 0 0 Diarrhea 0 1.1 4.5 1.9 Nausea/Vomiting 9.9 1.1 12.7 9.5 Musculoskeletal Musculoskeletal Aches/Pains 5.6 3.2 5.1 2.5 Neurological Incoordination 4.9 0 1.9 0 Paresthesia 1.4 0 0 * Tremors 2.8 1.1 5.1 3.8 Sexual Function Decreased Libido * 1.1 1.3 * Other Decreased Appetite 3.5 5.3 0 * Eyes Red/Tired/Itching 2.8 0 0 0 Head Full-Heavy 2.8 0 0 0 Malaise 2.8 0 0 0 Nasal/Sinus Congestion 2.8 0 5.7 3.2 Nightmares/Vivid Dreams * 1.1 5.1 5.7 Sweating/Clamminess 1.4 1.1 * * Tinnitus 1.4 0 0 * Weight Gain 1.4 0 4.5 1.9 Weight Loss * 3.2 5.7 2.5
*Incidence less than 1%
Occasional sinus bradycardia has occurred in long-term studies.
In addition to the relatively common (i.e., greater than 1%) untoward events enumerated above, the following adverse events have been reported to occur in association with the use of trazodone hydrochloride in the controlled clinical studies: akathisia, allergic reaction, anemia, chest pain, delayed urine flow, early menses, flatulence, hallucinations/delusions, hematuria, hyper-salivation, hypomania, impaired speech, impotence, increased appetite, increased libido, increased urinary frequency, missed periods, muscle twitches, numbness, and retrograde ejaculation.
6.2 Postmarketing Experience
Spontaneous reports regarding trazodone hydrochloride received from postmarketing experience include the following: abnormal dreams, agitation, alopecia, anxiety, aphasia, apnea, ataxia, breast enlargement or engorgement, cardiospasm, cerebrovascular accident, chills, cholestasis, clitorism, congestive heart failure, diplopia, edema, extrapyramidal symptoms, grand mal seizures, hallucinations, hemolytic anemia, hirsutism, hyperbilirubinemia, increased amylase, increased salivation, insomnia, leukocytosis, leukonychia, jaundice, lactation, liver enzyme alterations, methemoglobinemia, nausea/vomiting (most frequently), paresthesia, paranoid reaction, priapism [see Warnings and Precautions ( 5.9) and Patient Counseling Information ( 17.1)] , pruritus, psoriasis, psychosis, rash, stupor, inappropriate ADH syndrome, tardive dyskinesia, unexplained death, urinary incontinence, urinary retention, urticaria, vasodilation, vertigo, and weakness.
Cardiovascular system effects which have been reported include the following: conduction block, orthostatic hypotension and syncope, palpitations, bradycardia, atrial fibrillation, myocardial infarction, cardiac arrest, arrhythmia, ventricular ectopic activity, including ventricular tachycardia and QT prolongation. In postmarketing surveillance, prolonged QT interval, torsade de pointes, and ventricular tachycardia have been reported with the immediate-release form of trazodone at doses of 100 mg per day or less [see Warnings and Precautions ( 5.4)] .
7 Drug Interactions
MAOIs
MAOIs should not be used within 14 days of trazodone [see Warnings and Precautions ( 5.8)].
Central Nervous System (CNS) Depressants
Trazodone may enhance the response to alcohol, barbiturates, and other CNS depressants.
Cytochrome P450 3A4 Inhibitors
In vitro drug metabolism studies suggest that there is a potential for drug interactions when trazodone is given with cytochrome P450 3A4 (CYP3A4) inhibitors. The effect of short-term administration of ritonavir (200 mg twice daily, 4 doses) on the pharmacokinetics of a single dose of trazodone (50 mg) has been studied in 10 healthy subjects. The C max of trazodone increased by 34%, the AUC increased 2.4 fold, the half-life increased by 2.2 fold, and the clearance decreased by 52%. Adverse effects including nausea, hypotension, and syncope were observed when ritonavir and trazodone were coadministered. It is likely that ketoconazole, indinavir, and other CYP3A4 inhibitors such as itraconazole may lead to substantial increases in trazodone plasma concentrations with the potential for adverse effects. If trazodone is used with a potent CYP3A4 inhibitor, the risk of cardiac arrhythmia may be increased [see Warnings and Precautions ( 5.4)] and a lower dose of trazodone should be considered.
Cytochrome P450 Inducers (e.g., Carbamazepine)
Carbamazepine induces CYP3A4. Following coadministration of carbamazepine 400 mg per day with trazodone 100 mg to 300 mg daily, carbamazepine reduced plasma concentrations of trazodone and m-chlorophenlypiperazine (an active metabolite) by 76% and 60% respectively, compared to pre-carbamazepine values. Patients should be closely monitored to see if there is a need for an increased dose of trazodone when taking both drugs.
Digoxin and Phenytoin
Increased serum digoxin or phenytoin levels have been reported in patients receiving trazodone concurrently with either of these drugs. Monitor serum levels and adjust dosages as needed.
Serotonergic Drugs
Based on the mechanism of action of trazodone and the potential for serotonin syndrome, caution is advised when trazodone is coadministered with other drugs that may affect the neurotransmitter systems [ see Warnings and Precautions ( 5.2) ].
NSAIDs, Aspirin, or Other Drugs Affecting Coagulation or Bleeding
Due to a possible association between serotonin modulating drugs and gastrointestinal bleeding, patients should be monitored for and cautioned about the potential risk of bleeding associated with the concomitant use of trazodone and NSAIDs, aspirin, or other drugs that affect coagulation or bleeding [s ee Warnings and Precautions ( 5.7) ].
Warfarin
There have been reports of altered (either increased or decreased) prothrombin times in taking both warfarin and trazodone.
- CNS Depressants: Trazodone may enhance effects of alcohol, barbiturates, or other CNS depressants (
7 ).- CYP3A4 Inhibitors: May necessitate lower dose of trazodone hydrochloride tablets (
7 ).- CYP3A4 Inducers (e.g., Carbamazepine): May necessitate higher dose of trazodone hydrochloride tablets (
7 ).- Digoxin or Phenytoin: Monitor for increased serum levels (
7 ).- Warfarin: Monitor for increased or decreased prothrombin time (
7 ).
8 Use In Specific Populations
- Pregnancy: Based on animal data, may cause fetal harm (
8.1 ).- Nursing Mothers: Use with caution (
8.3 ).- Pediatric Patients: trazodone hydrochloride tablets are not approved in pediatric patients (
8.4 ).- Renal or Hepatic Impairment: Use with caution (
8.6 ,8.7 ).8.1 Pregnancy
Teratogenic Effects
Pregnancy Category C
Trazodone hydrochloride has been shown to cause increased fetal resorption and other adverse effects on the fetus in two studies using the rat when given at dose levels approximately 30 to 50 times the proposed maximum human dose. There was also an increase in congenital anomalies in one of three rabbit studies at approximately 15 to 50 times the maximum human dose. There are no adequate and well-controlled studies in pregnant women. Trazodone hydrochloride should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
8.3 Nursing Mothers
Trazodone and/or its metabolites have been found in the milk of lactating rats, suggesting that the drug may be secreted in human milk. Caution should be exercised when trazodone is administered to a nursing woman.
8.4 Pediatric Use
Safety and effectiveness in the pediatric population have not been established [ see Boxed Warning and Warnings and Precautions ( 5.1) ]. Trazodone hydrochloride should not be used in children or adolescents.
8.5 Geriatric Use
Reported clinical literature and experience with trazodone has not identified differences in responses between elderly and younger patients. However, as experience in the elderly with trazodone hydrochloride is limited, it should be used with caution in geriatric patients.
Antidepressants have been associated with cases of clinically significant hyponatremia in elderly patients who may be at greater risk for this adverse reaction [ see Warnings and Precautions ( 5.10) ].
8.6 Renal Impairment
Trazodone has not been studied in patients with renal impairment. Trazodone should be used with caution in this population.
8.7 Hepatic Impairment
Trazodone has not been studied in patients with hepatic impairment. Trazodone should be used with caution in this population.
9 Drug Abuse And Dependence
9.1 Controlled Substance
Trazodone hydrochloride tablets are not a controlled substance.
9.2 Abuse
Although trazodone hydrochloride has not been systematically studied in preclinical or clinical studies for its potential for abuse, no indication of drug-seeking behavior was seen in the clinical studies with trazodone hydrochloride. However, it is difficult to predict the extent to which a CNS-active drug will be misused, diverted, and abused. Consequently, physicians should carefully evaluate patients for a history of drug abuse and follow such patients closely, observing them for signs of misuse or abuse of trazodone hydrochloride (e.g., development of tolerance, incrementation of dose, drug-seeking behavior).
10 Overdosage
10.1 Human Experience
Death from overdose has occurred in patients ingesting trazodone and other CNS depressant drugs concurrently (alcohol; alcohol and chloral hydrate and diazepam; amobarbital; chlordiazepoxide; or meprobamate).
The most severe reactions reported to have occurred with overdose of trazodone alone have been priapism, respiratory arrest, seizures, and ECG changes, including QT prolongation. The reactions reported most frequently have been drowsiness and vomiting. Overdosage may cause an increase in incidence or severity of any of the reported adverse reactions.
10.2 Management of Overdose
There is no specific antidote for trazodone hydrochloride overdose.
Treatment should consist of those general measures employed in the management of overdosage with any drug effective in the treatment of major depressive disorder.
Ensure an adequate airway, oxygenation and ventilation. Monitor cardiac rhythm and vital signs.
General supportive and symptomatic measures are also recommended. Induction of emesis is not recommended. Gastric lavage with a large bore orogastric tube with appropriate airway protection, if needed, may be indicated if performed soon after ingestion, or in symptomatic patients. Activated charcoal should be administered. Forced diuresis may be useful in facilitating elimination of the drug.
In managing overdosage, consider the possibility of multiple drug involvement. The physician should consider contacting a poison control center for additional information on the treatment of any overdose.
11 Description
Trazodone hydrochloride is an antidepressant chemically unrelated to tricyclic, tetracyclic, or other known antidepressant agents. Trazodone hydrochloride is a triazolopyridine derivative designated as 2-[3-[4-(3-chlorophenyl)-1-piperazinyl]propyl]-1,2,4-triazolo[4, 3-a]pyridin-3(2 H)-one hydrochloride. It is a white odorless crystalline powder which is freely soluble in water. The structural formula is represented as follow
Each tablet, for oral administration, contains 50 mg, 100 mg, 150 mg or 300 mg of trazodone hydrochloride. In addition, each tablet contains the following inactive ingredients: colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose, pregelatinized starch, sodium lauryl sulfate, and sodium starch glycolate.
12 Clinical Pharmacology
12.1 Mechanism of Action
The mechanism of trazodone’s antidepressant action is not fully understood, but is thought to be related to its potentiation of serotonergic activity in the CNS.
12.2 Pharmacodynamics
Preclinical studies have shown that trazodone selectively inhibits neuronal reuptake of serotonin and acts as an antagonist at 5-HT-2A/2C serotonin receptors.
Trazodone is not a monoamine oxidase inhibitor and, unlike amphetamine-type drugs, does not stimulate the central nervous system.
Trazodone antagonizes alpha 1-adrenergic receptors, a property which may be associated with postural hypotension.
12.3 Pharmacokinetics
Absorption
In humans, trazodone hydrochloride is well absorbed after oral administration without selective localization in any tissue. When trazodone hydrochloride is taken shortly after ingestion of food, there may be an increase in the amount of drug absorbed, a decrease in maximum concentration and a lengthening in the time to maximum concentration. Peak plasma levels occur approximately one hour after dosing when trazodone hydrochloride is taken on an empty stomach or 2 hours after dosing when taken with food.
Metabolism
In vitro studies in human liver microsomes show that trazodone is metabolized, via oxidative cleavage, to an active metabolite, m-chlorophenylpiperazine (mCPP) by CYP3A4. Other metabolic pathways that may be involved in the metabolism of trazodone have not been well characterized. Trazodone is extensively metabolized; less than 1% of an oral dose is excreted unchanged in the urine.
Elimination
In some patients trazodone may accumulate in the plasma
Protein Binding
Trazodone is 89 to 95% protein bound in vitro at concentrations attained with therapeutic doses in humans.
13 Nonclinical Toxicology
13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility
No drug- or dose-related occurrence of carcinogenesis was evident in rats receiving trazodone in daily oral doses up to 300 mg/kg for 18 months.
14 Clinical Studies
The efficacy and safety of trazodone hydrochloride were established from both inpatient and outpatient trials of the trazodone immediate release formulation in the treatment of major depressive disorder.
17 Patient Medication Information Section
See FDA-approved Medication Guide
17.1 Information for Patients
Prescribers or other health professionals should inform patients, their families, and their caregivers about the benefits and risks associated with treatment with trazodone hydrochloride and should counsel them in its appropriate use.
Patients should be warned that:
- Patients should be advised that taking trazodone hydrochloride can cause mild pupillary dilation, which in susceptible individuals, can lead to an episode of angle-closure glaucoma. Pre-existing glaucoma is almost always open-angle glaucoma because angle closure glaucoma, when diagnosed, can be treated definitively with iridectomy. Open-angle glaucoma is not a risk factor for angle closure glaucoma. Patients may wish to he examined to determine whether they are susceptible to angle closure, and have a prophylactic procedure (e.g., iridectomy), if they are susceptible. [see Warnings and Precautions ( 5.12)]
- There is a potential for increased risk of suicidal thoughts especially in children, teenagers and young adults.
- The following symptoms should be reported to the physician: anxiety, agitation, panic attacks, insomnia, irritability, hostility, aggressiveness, impulsivity, akathisia, hypomania and mania.
- They should inform their physician if they have a history of bipolar disorder, cardiac disease or myocardial infarction.
- Serotonin syndrome could occur and symptoms may include changes in mental status (e.g., agitation, hallucinations, and coma), autonomic instability (e.g., tachycardia, labile blood pressure, and hyperthermia), neuromuscular aberrations (e.g., hyperreflexia, incoordination) and/or gastrointestinal symptoms (e.g., nausea, vomiting, and diarrhea).
- Trazodone hydrochloride has been associated with the occurrence of priapism.
- There is a potential for hypotension, including orthostatic hypotension and syncope.
- There is a potential risk of bleeding (including life-threatening hemorrhages) and bleeding related events (including ecchymosis, hematoma, epistaxis, and petechiae) with the concomitant use of trazodone hydrochloride and NSAIDs, aspirin, or other drugs that affect coagulation or bleeding.
- Withdrawal symptoms including anxiety, agitation and sleep disturbances, have been reported with trazodone. Clinical experience suggests that the dose should be gradually reduced.
Patients should be counseled that:
- Trazodone may cause somnolence or sedation and may impair the mental and/or physical ability required for the performance of potentially hazardous tasks. Patients should be cautioned about operating hazardous machinery, including automobiles until they are reasonably certain that the drug treatment does not affect them.
- Trazodone may enhance the response to alcohol, barbiturates, and other CNS depressants.
- Women who intend to become pregnant or who are breastfeeding should discuss with a physician whether they should continue to use trazodone, since use in pregnant and nursing women is not recommended.
Important Administration Instructions:
- Trazodone hydrochloride tablets should be swallowed whole or broken in half along the score line.
- Trazodone hydrochloride tablets should be taken shortly after a meal or light snack.
APOTEX INC. TRAZODONE HYDROCHLORIDE TABLETS, USP 50 mg, 100 mg, 150 mg and 300 mg
Manufactured by: Manufactured For: Apotex Inc. Apotex Corp. Toronto, Ontario Weston Florida 33326
Canada M9L 1T9
Revised: August 2014
Rev. 4
Medication Guide
Trazodone hydrochloride tablets, USP
(traz' oh done hye'' droe klor' ide)
Read the Medication Guide that comes with trazodone hydrochloride tablets before you start taking it and each time you get a refill. There may be new information. This information does not take the place of talking to your healthcare provider about your medical condition or treatment. Talk to your healthcare provider or pharmacist if there is something you do not understand or you want to learn about trazodone hydrochloride tablets.
What is the most important information I should know about trazodone hydrochloride tablets?
Antidepressant medicines, depression or other serious mental illnesses, and suicidal thoughts or actions: Talk to your healthcare provider about:
- All risks and benefits of treatment with antidepressant medicines
- All treatment choices for depression or other serious mental illnesses
1. Antidepressant medicines may increase suicidal thoughts or actions in some children, teenagers, and young adults within the first few months of treatment.
2. Depression and other serious mental illnesses are the most important causes of suicidal thoughts and actions. Some people may have a higher risk of having suicidal thoughts or actions. These include people who have or have a family history ofbipolar illness (also called manic- depressive illness) or suicidal thoughts or actions.
3. How can I watch for and try to prevent suicidal thoughts and actions?
- Pay close attention to any changes, especially sudden changes in mood, behaviors, thoughts, or feelings. This is very important when an antidepressant medicine is started or when the dose is changed.
- Call your healthcare provider right away to report new or sudden changes in mood, behavior, thoughts or feelings.
- Keep all follow-up visits with your healthcare provider as scheduled. Call your healthcare provider between visits as needed, especially if you are worried about symptoms.
Call a healthcare provider right away if you have any of the following symptoms, especially if they are new, worse, or worry you:
- Thoughts about suicide or dying
- Attempts to commit suicide
- New or worse depression
- New or worse anxiety
- Feeling very agitated or restless
- Panic attacks
- Trouble sleeping (insomnia)
- New or worse irritability
- Acting aggressive, being angry or violent
- Acting on dangerous impulses
- An extreme increase in activity and talking (mania)
- Other unusual changes in behavior or mood
4. Visual problems:eye painchanges in visionswelling or redness in or around the eye
- eye pain
- changes in vision
- swelling or redness in or around the eye
Only some people are at risk for these problems. You may want to undergo an eye examination to see if you are at risk and receive preventative treatment if you are.
5. What else do I need to know about antidepressant medicines?
Never stop an antidepressant medicine without first talking to a healthcare provider. Stopping an antidepressant medicine suddenly cancause other symptoms.
Antidepressants are medicines used to treat depression and other illnesses. It is important to discuss all the risks of treating depression andalso the risks of not treating it. You should discuss all treatment choices with your healthcare provider, not just the use of antidepressants.
Antidepressant medicines have other side effects. Talk to your healthcare provider about the side effects of your medicines.
Antidepressant medicines can interact with other medicines. Know all of the medicines that you take. Keep a ul of all medicines to show your healthcare provider. Do not start new medicines without first checking with your healthcare provider.
4. Trazodone hydrochloride tablets are not approved for use in children. Talk to your healthcare provider for more information.
What are trazodone hydrochloride tablets?
Trazodone hydrochloride tablets are a prescription medicine used to treat major depressive disorder in adults.
What should I tell my healthcare provider before taking trazodone hydrochloride tablets?
Before you take trazodone hydrochloride tablets tell your healthcare provider if you:
- have heart problems, including QT prolongation or a family history of it
- have ever had a heart attack
- have bipolar disorder
- have liver or kidney problems
- have other serious medical conditions
- are pregnant or plan to become pregnant. Trazodone hydrochloride tablets may harm your unborn baby. Talk to your healthcare provider if you are pregnant or plan to become pregnant.
- are breastfeeding or plan to breastfeed. It is not known if trazodone hydrochloride tablets into your breast milk. You and your healthcare provider should decide if you will take trazodone hydrochloride or breastfeed.
- have taken a Monoamine Oxidase Inhibitor (MAOI) or if you have stopped taking an MAOI in the last 2 weeks.
Tell your healthcare provider about all the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements.
Using trazodone hydrochloride tablets with certain other medicines can affect each other causing serious side effects.
Know the medicines you take. Keep a ul of them and show it to your healthcare provider and pharmacist when you get a new medicine.
How should I take trazodone hydrochloride tablets?
- Take trazodone hydrochloride tablets exactly as your healthcare provider tells you.
- Trazodone hydrochloride tablets should be taken shortly after a meal or light snack.
- If you feel drowsy after taking trazodone hydrochloride tablets, talk to your healthcare provider. Your healthcare provider may change your dose or the time of day you take your trazodone hydrochloride tablets.
- Do not stop taking trazodone hydrochloride tablets without talking to your healthcare provider.
- Trazodone hydrochloride tablets should be swallowed whole or broken in half along the score line. Do not chew or crush trazodone hydrochloride tablets. Tell your healthcare provider if you cannot swallow trazodone either whole or as a half tablet.
- If you take too much trazodone hydrochloride, call your doctor or go to the nearest emergency room right away.
What should I avoid while taking trazodone hydrochloride tablets?
- Do not drive, operate heavy machinery, or do other dangerous activities until you know how trazodone hydrochloride tablets affect you. Trazodone hydrochloride tablets can slow your thinking and motor skills.
- Do not drink alcohol or take other medicines that make you sleepy or dizzy while taking trazodone hydrochloride tablets until you talk with your healthcare provider. Trazodone hydrochloride tablets may make your sleepiness or dizziness worse if you take it with alcohol or other medicines that cause sleepiness or dizziness.
What are the possible side effects of trazodone hydrochloride tablets?
Trazodone hydrochloride tablets can cause serious side effects or death. See “What is the most important information I should know about trazodone hydrochloride tablets?”
Serious side effects include:
- Serotonin syndrome. Symptoms of serotonin syndrome include: agitation, hallucinations, problems with coordination, fast heartbeat, tight muscles, trouble walking, nausea, vomiting, diarrhea.
- Feeling high or in a very good mood, then becoming irritable, or having too much energy, feeling like you have to keep talking or do not sleep (mania).
- Irregular or fast heartbeat or faint (QT prolongation).
- Low blood pressure. You feel dizzy or faint when you change positions (go from sitting to standing).
- Unusual bruising or bleeding.
- Erection lasting for more than 6 hours (priapism).
- Low sodium in your blood (hyponatremia). Symptoms of hyponatremia include: headache, feeling weak, feeling confused, trouble concentrating, memory problems and feeling unsteady when you walk.
- Withdrawal symptoms. Symptoms of withdrawal can include anxiety, agitation, and sleep problems. Do not stop taking trazodone hydrochloride tablets without talking to your healthcare provider.
Get medical help right away, if you have any of the symptoms uled above.
The most common side effects of trazodone hydrochloride tablets include:
- Sleepiness
- Dizziness
- Constipation
- Blurry vision
Tell your healthcare provider if you have any side effect that bothers you or that does not go away.
These are not all the possible side effects of trazodone hydrochloride tablets. For more information, ask your healthcare provider or pharmacist .
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
How should I store trazodone hydrochloride tablets?
- Store trazodone hydrochloride tablets between 20° to 25°C (68° to 77°F).
- Keep in tight container
- Keep out of the light
- Safely throw away medicine that is out of date or no longer needed.
Keep trazodone hydrochloride tablets and all medicines out of the reach of children.
General information about the safe and effective use of trazodone hydrochloride tablets.
Medicines are sometimes prescribed for purposes other than those uled in a Medication Guide. Do not use trazodone hydrochloride tablets for a condition for which it was not prescribed. Do not give trazodone hydrochloride tablets to other people, even if they have the same symptoms that you have. It may harm them.
This Medication Guide summarizes the most important information about trazodone hydrochloride tablets. If you would like more information, talk with your healthcare provider. You can ask your pharmacist or healthcare provider for information about trazodone hydrochloride tablets that is written for health professionals .
For more information contact Apotex Corp., Drug Safety at 1-800-706-5575.
What are the ingredients in trazodone hydrochloride tablets?
Active ingredient: trazodone hydrochloride, USP
Inactive ingredients: colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose, pregelatinized starch, sodium lauryl sulfate, and sodium starch glycolate.
This Medication Guide has been approved by the U.S. Food and Drug Administration.
APOTEX INC. TRAZODONE HYDROCHLORIDE TABLETS, USP 50 mg, 100 mg, 150 mg and 300 mg
Manufactured by: Manufactured For: Apotex Inc. Apotex Corp. Toronto, Ontario Weston Florida 33326 Canada M9L 1T9
Revised: August 2014
Principal Display Panel
TraZODONE Hydrochloride Tablets, USP 150mg
30 Tablets
NDC 10544-867-30
16 How Supplied/storage And Handling
Trazodone Hydrochloride Tablets, USP 50 mg are available for oral administration as white, round, biconvex, tablets. Engraved “APO” bisect “T50” on one side, other side plain.
Bottles of 100 (NDC 60505-2653-1)
Bottles of 500 (NDC 60505-2653-5)
Unit Dose Buler Packages of 100 (10 x 10 unit dose) (NDC 60505-2653-0)
Trazodone Hydrochloride Tablets, USP 100 mg are available for oral administration as white, round, biconvex, tablets. Engraved “APO” bisect “T100” on one side, other side plain.
Bottles of 100 (NDC 60505-2654-1)
Bottles of 500 (NDC 60505-2654-5)
Unit Dose Buler Packages of 100 (10 x 10 unit dose) (NDC 60505-2654-0)
Trazodone Hydrochloride Tablets, USP 150 mg are available for oral administration as white, oval, flat faced beveled-edge tablets with a full bisect and 2 partial trisects. Engraved “APO” bisect “T150” on one side, and “50 50 50” on the other side.
Bottles of 100 (NDC 60505-2655-1)
Bottles of 500 (NDC 60505-2655-5)
Directions for using the correct score when breaking the tablet, please refer to the following:
-For 50 mg, break the score on either the left or right side of the tablet (one-third of a tablet).
-For 75 mg, break the score down the middle of the tablet (one-half of a tablet).
-For 100 mg, break the score on either the left or right side of the tablet (two-thirds of a tablet).
-For 150 mg, use the entire tablet.
Trazodone Hydrochloride Tablets, USP 300 mg are available for oral administration as white, oval, flat faced beveled-edge tablets with a full bisect and 2 partial trisects. Engraved “APO” bisect “T300” on one side, and “100 100 100” on the other side with the middle “100” perpendicular to the others.
Bottles of 100 (NDC 60505-2659-1)
Bottles of 500 (NDC 60505-2659-5)
Directions for using the correct score when breaking the tablet, please refer to the following:
-For 100 mg, break the score on either the left or right side of the tablet (one-third of a tablet).
-For 150 mg, break the score down the middle of the tablet (one-half of a tablet).
-For 200 mg, break the score on either the left or right side of the tablet (two-thirds of a tablet).
-For 300 mg, use the entire tablet.
Store at 20° to 25°C (68° to 77°F); excursions permitted from 15° to 30°C (59° to 86°F) [see USP Controlled Room Temperature]. Dispense with a child-resistant closure in a tight, light-resistant container.
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