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ULTRAM ER (tramadol hydrochloride 200 mg) Dailymed

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  3. Rebel Distributors Corp

Generic: tramadol hydrochloride

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Prescribing Information

Description


ULTRAM® ER (tramadol hydrochloride) is a centrally acting synthetic analgesic in an extended-release formulation. The chemical name is (±) cis-2-[(dimethylamino)methyl]-1-(3-methoxyphenyl) cyclohexanol hydrochloride. Its structural formula is:

Figure 1

The molecular weight of tramadol HCl is 299.8. It is a white, bitter, crystalline and odorless powder that is readily soluble in water and ethanol and has a pKa of 9.41. The n-octanol/water log partition coefficient (logP) is 1.35 at pH 7. ULTRAM ER tablets contain 100, 200 or 300 mg of tramadol HCl in an extended-release formulation. The tablets are white to off-white in color and contain the inactive ingredients ethylcellulose, dibutyl sebacate, polyvinyl pyrrolidone, sodium stearyl fumarate, colloidal silicon dioxide, and polyvinyl alcohol.

Clinical Pharmacology


MECHANISM OF ACTION SECTION


Mechanism of Action

ULTRAM ER is a centrally acting synthetic opioid analgesic. Although its mode of action is not completely understood, from animal tests, at least two complementary mechanisms appear applicable: binding of parent and M1 metabolite to µ-opioid receptors and weak inhibition of reuptake of norepinephrine and serotonin.

Opioid activity is due to both low affinity binding of the parent compound and higher affinity binding of the O-demethylated metabolite M1 to µ-opioid receptors. In animal models, M1 is up to 6 times more potent than tramadol in producing analgesia and 200 times more potent in µ-opioid binding. Tramadol-induced analgesia is only partially antagonized by the opiate antagonist naloxone in several animal tests. The relative contribution of both tramadol and M1 to human analgesia is dependent upon the plasma concentrations of each compound.

Tramadol has been shown to inhibit reuptake of norepinephrine and serotonin in vitro, as have some other opioid analgesics. These mechanisms may contribute independently to the overall analgesic profile of tramadol. The relationship between exposure of tramadol and M1 and efficacy has not been evaluated in the ULTRAM ER clinical studies.

Apart from analgesia, tramadol administration may produce a constellation of symptoms (including dizziness, somnolence, nausea, constipation, sweating and pruritus) similar to that of other opioids. In contrast to morphine, tramadol has not been shown to cause histamine release. At therapeutic doses, tramadol has no effect on heart rate, left-ventricular function or cardiac index. Orthostatic hypotension has been observed.

Pharmacokinetics


The analgesic activity of tramadol is due to both parent drug and the M1 metabolite. ULTRAM ER is administered as a racemate and both the [-] and [+] forms of both tramadol and M1 are detected in the circulation.

The pharmacokinetics of ULTRAM ER are approximately dose-proportional over a 100-400 mg dose range in healthy subjects. The observed tramadol AUC values for the 400-mg dose were 26% higher than predicted based on the AUC values for the 200-mg dose. The clinical significance of this finding has not been studied and is not known.


Absorption

In healthy subjects, the bioavailability of a ULTRAM ER 200 mg tablet relative to a 50 mg every six hours dosing regimen of the immediate-release dosage form (ULTRAM) was approximately 85-90%. Consistent with the extended-release nature of the formulation, there is a lag time in drug absorption following ULTRAM ER administration. The mean peak plasma concentrations of tramadol and M1 after administration of ULTRAM ER tablets to healthy volunteers are attained at about 12 h and 15 h, respectively, after dosing (see Table 1 and Figure 2). Following administration of the ULTRAM ER, steady-state plasma concentrations of both tramadol and M1 are achieved within four days with once daily dosing.

The mean (%CV) pharmacokinetic parameter values for ULTRAM ER 200 mg administered once daily and tramadol HCl immediate-release (ULTRAM) 50 mg administered every six hours are provided in Table 1.
Table 1.
Mean (%CV) Steady-State Pharmacokinetic Parameter Values (n=32)
Tramadol M1 Metabolite
Pharma-cokineticParameter ULTRAM ER200-mgTabletOnce-Daily ULTRAM50-mgTablet Every6 Hours ULTRAM ER200-mgTabletOnce-Daily ULTRAM50-mgTablet Every6 Hours
AUC0-24: Area Under the Curve in a 24-hour dosing interval; Cmax: Peak Concentration in a 24-hour dosing interval;
Cmin: Trough Concentration in a 24-hour dosing interval; Tmax: Time to Peak Concentration
AUC0-24 (ng∙h/mL) 5975 (34) 6613 (27) 1890 (25) 2095 (26)
Cmax (ng/mL) 335 (35) 383 (21) 95 (24) 104 (24)
Cmin (ng/mL) 187 (37) 228 (32) 69 (30) 82 (27)
Tmax (h) 12 (27) 1.5 (42) 15 (27) 1.9 (57)
% Fluctuation 61 (57) 59 (35) 34 (72) 26 (47)

Figure 2: Mean Steady-State Tramadol (a) and M1 (b) Plasma Concentrations on Day 8 Post Dose after Administration of 200 mg ULTRAM ER Once-Daily and 50 mg ULTRAM Every 6 Hours.


Food Effects

After a single dose administration of 200 mg ULTRAM ER tablet with a high fat meal, the Cmax and AUC0-∞ of tramadol decreased 28% and 16%, respectively, compared to fasting conditions. Mean Tmax was increased by 3 hr (from 14 hr under fasting conditions to 17 hr under fed conditions). While ULTRAM ER may be taken without regard to food, it is recommended that it be taken in a consistent manner.


Distribution

The volume of distribution of tramadol was 2.6 and 2.9 liters/kg in male and female subjects, respectively, following a 100-mg intravenous dose. The binding of tramadol to human plasma proteins is approximately 20% and binding also appears to be independent of concentration up to 10 µg/mL. Saturation of plasma protein binding occurs only at concentrations outside the clinically relevant range.


Metabolism

Tramadol is extensively metabolized after oral administration. The major metabolic pathways appear to be N – (mediated by CYP3A4 and CYP2B6) and O – (mediated by CYP2D6) demethylation and glucuronidation or sulfation in the liver. One metabolite (O-desmethyl tramadol, denoted M1) is pharmacologically active in animal models. Formation of M1 is dependent on CYP2D6 and as such is subject to inhibition, which may affect the therapeutic response (see PRECAUTIONS, Drug Interactions ).


Elimination

Tramadol is eliminated primarily through metabolism by the liver and the metabolites are eliminated primarily by the kidneys. Approximately 30% of the dose is excreted in the urine as unchanged drug, whereas 60% of the dose is excreted as metabolites. The remainder is excreted either as unidentified or as unextractable metabolites. The mean terminal plasma elimination half-lives of racemic tramadol and racemic M1 after administration of ULTRAM ER are approximately 7.9 and 8.8 hours, respectively.

Special Populations



Renal

Impaired renal function results in a decreased rate and extent of excretion of tramadol and its active metabolite, M1. The pharmacokinetics of tramadol were studied in patients with mild or moderate renal impairment after receiving multiple doses of ULTRAM ER 100 mg. There is no consistent trend observed for tramadol exposure related to renal function in patients with mild (CLcr: 50-80 mL/min) or moderate (CLcr: 30-50 mL/min) renal impairment in comparison to patients with normal renal function. However, exposure of M1 increased 20-40% with increased severity of the renal impairment (from normal to mild and moderate). ULTRAM ER has not been studied in patients with severe renal impairment (CLcr < 30 mL/min). The limited availability of dose strengths of ULTRAM ER does not permit the dosing flexibility required for safe use in patients with severe renal impairment. Therefore, ULTRAM ER should not be used in patients with severe renal impairment (see PRECAUTIONS, Use in Renal and Hepatic Disease and DOSAGE AND ADMINISTRATION ). The total amount of tramadol and M1 removed during a 4-hour dialysis period is less than 7% of the administered dose.


Hepatic

Pharmacokinetics of tramadol was studied in patients with mild or moderate hepatic impairment after receiving multiple doses of ULTRAM ER 100 mg. The exposure of (+)- and (-)-tramadol was similar in mild and moderate hepatic impairment patients in comparison to patients with normal hepatic function. However, exposure of (+)- and (-)-M1 decreased ~50% with increased severity of the hepatic impairment (from normal to mild and moderate). The pharmacokinetics of tramadol after the administration of ULTRAM ER has not been studied in patients with severe hepatic impairment. After the administration of tramadol immediate-release tablets to patients with advanced cirrhosis of the liver, tramadol area under the plasma concentration time curve was larger and the tramadol and M1 half-lives were longer than subjects with normal hepatic function. The limited availability of dose strengths of ULTRAM ER does not permit the dosing flexibility required for safe use in patients with severe hepatic impairment. Therefore, ULTRAM ER should not be used in patients with severe hepatic impairment (see PRECAUTIONS, Use in Renal and Hepatic Disease and DOSAGE AND ADMINISTRATION ).


Geriatric

The effect of age on the absorption of tramadol from ULTRAM ER in patients over the age of 65 years has not been studied and is unknown (see PRECAUTIONS and DOSAGE AND ADMINISTRATION ).


Gender

Based on pooled multiple-dose pharmacokinetics studies for ULTRAM ER in 166 healthy subjects (111 males and 55 females), the dose-normalized AUC values for tramadol were somewhat higher in females than in males. There was a considerable degree of overlap in values between male and female groups. Dosage adjustment based on gender is not recommended.

Drug Interactions


The formation of the active metabolite, M1, is mediated by CYP2D6. Approximately 7% of the population has reduced activity of the CYP2D6 isoenzyme of cytochrome P-450. Based on a population PK analysis of Phase I studies with immediate-release tablets in healthy subjects, concentrations of tramadol were approximately 20% higher in "poor metabolizers" versus "extensive metabolizers," while M1 concentrations were 40% lower. In vitro drug interaction studies in human liver microsomes indicate that inhibitors of CYP2D6 (fluoxetine, norfluoxetine, amitriptyline, and quinidine) inhibit the metabolism of tramadol to various degrees, suggesting that concomitant administration of these compounds could result in increases in tramadol concentrations and decreased concentrations of M1. The full pharmacological impact of these alterations in terms of either efficacy or safety is unknown.

Tramadol is also metabolized by CYP3A4. Administration of CYP3A4 inhibitors, such as ketoconazole and erythromycin, or inducers, such as rifampin and St. John's Wort, with ULTRAM ER may affect the metabolism of tramadol leading to altered tramadol exposure (see PRECAUTIONS, Drug Interactions ).


Quinidine

Tramadol is metabolized to M1 by CYP2D6. A study was conducted to examine the effect of quinidine, a selective inhibitor of CYP2D6, on the pharmacokinetics of tramadol by administering 200 mg quinidine two hours before the administration of ULTRAM ER 100 mg. The results demonstrated that the exposure of tramadol increased 50-60% and the exposure of M1 decreased 50-60% (see PRECAUTIONS, Drug Interactions ). In vitro drug interaction studies in human liver microsomes indicate that tramadol has no effect on quinidine metabolism.


Carbamazepine

Carbamazepine, a CYP3A4 inducer, increases tramadol metabolism. Patients taking carbamazepine may have a significantly reduced analgesic effect of tramadol. Because of the seizure risk associated with tramadol, concomitant administration of ULTRAM ER and carbamazepine is not recommended (see PRECAUTIONS, Drug Interactions ).


Cimetidine

Concomitant administration of tramadol immediate-release tablets with cimetidine does not result in clinically significant changes in tramadol pharmacokinetics. No alteration of the ULTRAM ER dosage regimen with cimetidine is recommended.

Clinical Studies


ULTRAM ER was studied in patients with chronic, moderate to moderately severe pain due to osteoarthritis and/or low back pain in four 12-week, randomized, double-blind, placebo-controlled trials. To qualify for inclusion into these studies, patients were required to have moderate to moderately severe pain as defined by a pain intensity score of ≥40 mm, off previous medications, on a 0 – 100 mm visual analog scale (VAS). Adequate evidence of efficacy was demonstrated in the following two studies:

In one 12-week randomized, double-blind, placebo-controlled study, patients with moderate to moderately severe pain due to osteoarthritis of the knee and/or hip were administered doses from 100 mg to 400 mg daily. Treatment was initiated at 100 mg QD for four days then increased by 100 mg per day increments every five days to the randomized fixed dose. Between 51% and 59% of patients in the ULTRAM ER treatment groups completed the study and 56% of patients in the placebo group completed the study. Discontinuations due to adverse events were more common in the ULTRAM ER 200 mg, 300 mg and 400 mg treatment groups (20%, 27%, and 30% of discontinuations, respectively) compared to 14% of the patients treated with ULTRAM ER 100 mg and 20% of patients treated with placebo.

Pain, as assessed by the WOMAC Pain subscale, was measured at 1, 2, 3, 6, 9, and 12 weeks and change from baseline assessed. A responder analysis based on the percent change in WOMAC Pain subscale demonstrated a statistically significant improvement in pain for the 100 mg and 200 mg treatment groups compared to placebo (see Figure 3).

Figure 3

In one 12-week randomized, double-blind, placebo-controlled flexible-dosing trial of ULTRAM ER in patients with osteoarthritis of the knee, patients titrated to an average daily ULTRAM ER dose of approximately 270 mg/day. Forty-nine percent of patients randomized to ULTRAM ER completed the study, while 52% of patients randomized to placebo completed the study. Most of the early discontinuations in the ULTRAM ER treatment group were due to adverse events, accounting for 27% of the early discontinuations in contrast to 7% of the discontinuations from the placebo group. Thirty-four percent of the placebo-treated patients discontinued the study due to lack of efficacy compared to 15% of ULTRAM ER-treated patients. The ULTRAM ER group demonstrated a statistically significant decrease in the mean VAS score, and a statistically significant difference in the responder rate, based on the percent change from baseline in the VAS score, measured at 1, 2, 4, 8, and 12 weeks, between patients receiving ULTRAM ER and placebo (see Figure 4).

Figure 4

Indications And Usage


ULTRAM ER is indicated for the management of moderate to moderately severe chronic pain in adults who require around-the-clock treatment of their pain for an extended period of time.

Contraindications


ULTRAM ER should not be administered to patients who have previously demonstrated hypersensitivity to tramadol, any other component of this product or opioids. ULTRAM ER is contraindicated in any situation where opioids are contraindicated, including acute intoxication with any of the following: alcohol, hypnotics, narcotics, centrally acting analgesics, opioids or psychotropic drugs. ULTRAM ER may worsen central nervous system and respiratory depression in these patients.

Warnings


Seizure Risk


Seizures have been reported in patients receiving tramadol within the recommended dosage range. Spontaneous post-marketing reports indicate that seizure risk is increased with doses of tramadol above the recommended range. Concomitant use of tramadol increases the seizure risk in patients taking:
  • Selective serotonin re-uptake inhibitors (SSRI antidepressants or anorectics),
  • Tricyclic antidepressants (TCAs), and other tricyclic compounds (e.g., cyclobenzaprine, promethazine, etc.), or
  • Other opioids.

Administration of tramadol may enhance the seizure risk in patients taking:

Risk of convulsions may also increase in patients with epilepsy, those with a history of seizures, or in patients with a recognized risk for seizure (such as head trauma, metabolic disorders, alcohol and drug withdrawal, CNS infections). In tramadol overdose, naloxone administration may increase the risk of seizure.

Suicide Risk

  • Do not prescribe ULTRAM ER for patients who are suicidal or addiction-prone.
  • Prescribe ULTRAM ER with caution for patients taking tranquilizers or antidepressant drugs and patients who use alcohol in excess.
  • Tell your patients not to exceed the recommended dose and to limit their intake of alcohol.

Serotonin Syndrome Risk


The development of a potentially life-threatening serotonin syndrome may occur with the use of tramadol products, including ULTRAM ER, particularly with concomitant use of serotonergic drugs such as SSRIs, SNRIs, TCAs, MAOIs and triptans, with drugs which impair metabolism of serotonin (including MAOIs), and with drugs which impair metabolism of tramadol (CYP2D6 and CYP3A4 inhibitors). This may occur within the recommended dose. (see CLINICAL PHARMACOLOGY, Pharmacokinetics).

Serotonin syndrome may include mental-status changes (e.g., agitation, hallucinations, coma), autonomic instability (e.g., tachycardia, labile blood pressure, hyperthermia), neuromuscular aberrations (e.g., hyperreflexia, incoordination) and/or gastrointestinal symptoms (e.g., nausea, vomiting, diarrhea).

Tramadol products in excessive doses, either alone or in combination with other CNS depressants, including alcohol, are a major cause of drug-related deaths. Fatalities within the first hour of overdosage are not uncommon. Tramadol should not be taken in doses higher than those recommended by the physician. The judicious prescribing of tramadol is essential to the safe use of this drug. With patients who are depressed or suicidal, consideration should be given to the use of non-narcotic analgesics. Patients should be cautioned about the concomitant use of tramadol products and alcohol because of potentially serious CNS-additive effects of these agents. Because of its added depressant effects, tramadol should be prescribed with caution for those patients whose medical condition requires the concomitant administration of sedatives, tranquilizers, muscle relaxants, antidepressants, or other CNS-depressant drugs. Patients should be advised of the additive depressant effects of these combinations.

Many of the tramadol-related deaths have occurred in patients with previous histories of emotional disturbances or suicidal ideation or attempts as well as histories of misuse of tranquilizers, alcohol, and other CNS-active drugs. Some deaths have occurred as a consequence of the accidental ingestion of excessive quantities of tramadol alone or in combination with other drugs. Patients taking tramadol should be warned not to exceed the dose recommended by their physician.

Anaphylactoid Reactions


Serious and rarely fatal anaphylactoid reactions have been reported in patients receiving therapy with tramadol. When these events do occur it is often following the first dose. Other reported allergic reactions include pruritus, hives, bronchospasm, angioedema, toxic epidermal necrolysis and Stevens-Johnson syndrome. Patients with a history of anaphylactoid reactions to codeine and other opioids may be at increased risk and therefore should not receive ULTRAM ER (see CONTRAINDICATIONS ).

Respiratory Depression


Administer ULTRAM ER cautiously in patients at risk for respiratory depression. In these patients alternative non-opioid analgesics should be considered. When large doses of tramadol are administered with anesthetic medications or alcohol, respiratory depression may result. Respiratory depression should be treated as an overdose. If naloxone is to be administered, use cautiously because it may precipitate seizures (see WARNINGS, Seizure Risk and OVERDOSAGE ).

Interaction With Central Nervous System (CNS) Depressants


ULTRAM ER should be used with caution and in reduced dosages when administered to patients receiving CNS depressants such as alcohol, opioids, anesthetic agents, narcotics, phenothiazines, tranquilizers or sedative hypnotics. ULTRAM ER increases the risk of CNS and respiratory depression in these patients.


Increased Intracranial Pressure or Head Trauma

ULTRAM ER should be used with caution in patients with increased intracranial pressure or head injury. The respiratory depressant effects of opioids include carbon dioxide retention and secondary elevation of cerebrospinal fluid pressure, and may be markedly exaggerated in these patients. Additionally, pupillary changes (miosis) from tramadol may obscure the existence, extent, or course of intracranial pathology. Clinicians should also maintain a high index of suspicion for adverse drug reaction when evaluating altered mental status in these patients if they are receiving ULTRAM ER. (see WARNINGS, Respiratory Depression .)


Use in Ambulatory Patients

ULTRAM ER may impair the mental and or physical abilities required for the performance of potentially hazardous tasks such as driving a car or operating machinery. The patient using this drug should be cautioned accordingly.


Use With MAO Inhibitors and Serotonin Re-uptake Inhibitors

Use ULTRAM ER with great caution in patients taking monoamine oxidase inhibitors. Animal studies have shown increased deaths with combined administration. Concomitant use of ULTRAM ER with MAO inhibitors or SSRIs increases the risk of adverse events, including seizure and serotonin syndrome.

Withdrawal


Withdrawal symptoms may occur if ULTRAM ER is discontinued abruptly. These symptoms may include: anxiety, sweating, insomnia, rigors, pain, nausea, tremors, diarrhea, upper respiratory symptoms, piloerection, and rarely hallucinations. Clinical experience suggests that withdrawal symptoms may be reduced by tapering ULTRAM ER.


Misuse, Abuse and Diversion of Opioids

Tramadol is an opioid agonist of the morphine-type. Such drugs are sought by drug abusers and people with addiction disorders and are subject to criminal diversion.

Tramadol can be abused in a manner similar to other opioid agonists, legal or illicit. This should be considered when prescribing or dispensing ULTRAM ER in situations where the physician or pharmacist is concerned about an increased risk of misuse, abuse, or diversion.

ULTRAM ER could be abused by crushing, chewing, snorting, or injecting the dissolved product. These practices will result in the uncontrolled delivery of the opioid and pose a significant risk to the abuser that could result in overdose and death (see WARNINGS and DRUG ABUSE AND ADDICTION ).

Concerns about abuse, addiction, and diversion should not prevent the proper management of pain. The development of addiction to opioid analgesics in properly managed patients with pain has been reported to be rare. However, data are not available to establish the true incidence of addiction in chronic pain patients.

Healthcare professionals should contact their State Professional Licensing Board or State Controlled Substances Authority for information on how to prevent and detect abuse or diversion of this product.


Interactions with Alcohol and Drugs of Abuse

Tramadol may be expected to have additive effects when used in conjunction with alcohol, other opioids, or illicit drugs that cause central nervous system depression.

Drug Abuse And Addiction


ULTRAM® ER is a mu-agonist opioid. Tramadol, like other opioids used in analgesia, can be abused and is subject to criminal diversion.

Drug addiction is characterized by compulsive use, use for non-medical purposes, and continued use despite harm or risk of harm. Drug addiction is a treatable disease, utilizing a multi-disciplinary approach, but relapse is common.

"Drug-seeking" behavior is very common in addicts and drug abusers. Drug-seeking tactics include emergency calls or visits near the end of office hours, refusal to undergo appropriate examination, testing or referral, repeated "loss" of prescriptions, tampering with prescriptions and reluctance to provide prior medical records or contact information for other treating physician(s). "Doctor shopping" to obtain additional prescriptions is common among drug abusers and people suffering from untreated addiction.

Abuse and addiction are separate and distinct from physical dependence and tolerance. Physicians should be aware that addiction may not be accompanied by concurrent tolerance and symptoms of physical dependence in all addicts. In addition, abuse of opioids can occur in the absence of true addiction and is characterized by misuse for non-medical purposes, often in combination with other psychoactive substances. ULTRAM ER, like other opioids, may be diverted for non-medical use. Careful record-keeping of prescribing information, including quantity, frequency, and renewal requests is strongly advised.

Proper assessment of the patient, proper prescribing practices, periodic re-evaluation of therapy, and proper dispensing and storage are appropriate measures that help to limit abuse of opioid drugs.

ULTRAM ER is intended for oral use only. The crushed tablet poses a hazard of overdose and death. This risk is increased with concurrent abuse of alcohol and other substances. With parenteral abuse, the tablet excipients can be expected to result in local tissue necrosis, infection, pulmonary granulomas, and increased risk of endocarditis and valvular heart injury. Parenteral drug abuse is commonly associated with transmission of infectious diseases such as hepatitis and HIV.


Risk of Overdosage

Serious potential consequences of overdosage with ULTRAM ER are central nervous system depression, respiratory depression and death. In treating an overdose, primary attention should be given to maintaining adequate ventilation along with general supportive treatment (see OVERDOSAGE ).

Precautions


Acute Abdominal Condition


The administration of ULTRAM ER may complicate the clinical assessment of patients with acute abdominal conditions.

Use in Renal and Hepatic Disease


Impaired renal function results in a decreased rate and extent of excretion of tramadol and its active metabolite, M1. ULTRAM ER has not been studied in patients with severe renal impairment (CLcr < 30 mL/min). The limited availability of dose strengths and once daily dosing of ULTRAM ER do not permit the dosing flexibility required for safe use in patients with severe renal impairment. Therefore, ULTRAM ER should not be used in patients with severe renal impairment (see CLINICAL PHARMACOLOGY and DOSAGE AND ADMINISTRATION ). Metabolism of tramadol and M1 is reduced in patients with advanced cirrhosis of the liver. The pharmacokinetics of ULTRAM ER has not been studied in patients with severe hepatic impairment. The limited availability of dose strengths and once daily dosing of ULTRAM ER do not permit the dosing flexibility required for safe use in patients with severe hepatic impairment. Therefore, ULTRAM ER should not be used in patients with severe hepatic impairment (see CLINICAL PHARMACOLOGY and DOSAGE AND ADMINISTRATION ).

INFORMATION FOR PATIENTS

  • Patients should be informed that ULTRAM ER is for oral use only and should be swallowed whole. The tablets should not be chewed, crushed, or split.
  • Patients should be informed that ULTRAM ER may cause seizures and/or serotonin syndrome with concomitant use of serotonergic agents (including SSRIs, SNRIs, and triptans) or drugs that significantly reduce the metabolic clearance of tramadol.
  • Patients should be informed that ULTRAM ER may impair mental or physical abilities required for the performance of potentially hazardous tasks such as driving a car or operating machinery.
  • Patients should be informed that ULTRAM ER should not be taken with alcohol containing beverages.
  • Patients should be informed that ULTRAM ER should be used with caution when taking medications such as tranquilizers, hypnotics or other opiate containing analgesics.
  • Female patients should be instructed to inform the prescriber if they are pregnant, think they might become pregnant, or are trying to become pregnant (see PRECAUTIONS, Labor and Delivery ).
  • Patients should be educated regarding the single-dose and 24-hour dosing regimen, as exceeding these recommendations can result in respiratory depression, seizures or death.


Use in Drug and Alcohol Addiction

ULTRAM ER is an opioid with no approved use in the management of addictive disorders. Its proper usage in individuals with drug or alcohol dependence, either active or in remission, is for the management of pain requiring opioid analgesia.

Drug Interactions



CYP2D6 and CYP3A4 inhibitors: Concomitant administration of CYP2D6 and/or CYP3A4 inhibitors (see CLINICAL PHARMACOLOGY, Pharmacokinetics ), such as quinidine, fluoxetine, paroxetine and amitriptyline (CYP2D6 inhibitors), and ketoconazole and erythromycin (CYP3A4 inhibitors), may reduce metabolic clearance of tramadol increasing the risk for serious adverse events including seizures and serotonin syndrome.


Serotonergic Drugs: There have been postmarketing reports of serotonin syndrome with use of tramadol and SSRIs/SNRIs or MAOIs and α2-adrenergic blockers. Caution is advised when ULTRAM ER is coadministered with other drugs that may affect the serotonergic neurotransmitter systems, such as SSRIs, MAOIs, triptans, linezolid (an antibiotic which is a reversible non-selective MAOI), lithium, or St. John's Wort. If concomitant treatment of ULTRAM ER with a drug affecting the serotonergic neurotransmitter system is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases (see Warnings, Serotonin Syndrome Risk ).


Triptans: Based on the mechanism of action of tramadol and the potential for serotonin syndrome, caution is advised when ULTRAM ER is coadministered with a triptan. If concomitant treatment of ULTRAM ER with a triptan is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases (see WARNINGS, Serotonin Syndrome Risk ).


Use With Carbamazepine

Patients taking carbamazepine, a CYP3A4 inducer, may have a significantly reduced analgesic effect of tramadol. Because carbamazepine increases tramadol metabolism and because of the seizure risk associated with tramadol, concomitant administration of ULTRAM ER and carbamazepine is not recommended.


Use With Quinidine

Coadministration of quinidine with ULTRAM ER resulted in a 50-60% increase in tramadol exposure and a 50-60% decrease in M1 exposure (see CLINICAL PHARMACOLOGY, Drug Interactions ). The clinical consequences of these findings are unknown.


Use With Digoxin and Warfarin

Post-marketing surveillance of tramadol has revealed rare reports of digoxin toxicity and alteration of warfarin effect, including elevation of prothrombin times.


Potential for Other Drugs to Affect Tramadol

In vitro drug interaction studies in human liver microsomes indicate that concomitant administration with inhibitors of CYP2D6 such as fluoxetine, paroxetine, and amitriptyline could result in some inhibition of the metabolism of tramadol.

Administration of CYP3A4 inhibitors, such as ketoconazole and erythromycin, or inducers, such as rifampin and St. John's Wort, with ULTRAM ER may affect the metabolism of tramadol leading to altered tramadol exposure.


Potential for Tramadol to Affect Other Drugs

In vitro drug interaction studies in human liver microsomes indicate that tramadol has no effect on quinidine metabolism. In vitro studies indicate that tramadol is unlikely to inhibit the CYP3A4-mediated metabolism of other drugs when administered concomitantly at therapeutic doses. Tramadol is a mild inducer of selected drug metabolism pathways measured in animals.

CARCINOGENESIS, MUTAGENESIS, IMPAIRMENT OF FERTILITY


No carcinogenic effect of tramadol was observed in p53(+/–)-heterozygous mice at oral doses up to 150 mg/kg/day (approximately 2-fold maximum daily human dose [MDHD] of 400 mg/day for a 60 kg adult based on body surface conversion) for 26 weeks and in rats at oral doses up to 75 mg/kg/day for males and 100 mg/kg/day for females (approximately 2-fold MDHD) for two years. However, the excessive decrease in body weight gain observed in the rat study might have reduced their sensitivity to any potential carcinogenic effect of the drug.

Tramadol was not mutagenic in the following assays: a bacterial reverse mutation assay using Salmonella and E. coli, a mouse lymphoma assay (in the absence of metabolic activation), and a bone marrow micronucleus test in mice. Mutagenic results occurred in the presence of metabolic activation in the mouse lymphoma assay. Overall, the weight of evidence from these tests indicates that tramadol does not pose a genotoxic risk to humans.

No effects on fertility were observed for tramadol at oral dose levels up to 50 mg/kg/day in male and female rats (approximately equivalent to MDHD).

Pregnancy


TERATOGENIC EFFECTS SECTION

Teratogenic Effects: Pregnancy Category C

Tramadol was not teratogenic at oral dose levels up to 50 mg/kg/day (approximately equivalent to MDHD) in rats and 100 mg/kg (approximately 5-fold MDHD) in rabbits during organogenesis. However, embryo-fetal lethality, reductions in fetal weight and skeletal ossification, and increased supernumerary ribs were observed at a maternal toxic dose of 140 mg/kg in mice (approximately 2-fold MDHD), 80 mg/kg in rats (2-fold MDHD) or 300 mg/kg in rabbits (approximately 15-fold MDHD).

NONTERATOGENIC EFFECTS SECTION


Non-teratogenic Effects

Tramadol caused a reduction in neonatal body weight and survival at an oral dose of 80 mg/kg (approximately 2-fold MDHD) when rats were treated during late gestation throughout lactation period.

There are no adequate and well-controlled studies in pregnant women. ULTRAM ER should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. Neonatal seizures, neonatal withdrawal syndrome, fetal death and still birth have been reported during post-marketing reports with tramadol HCl immediate-release products.

LABOR & DELIVERY SECTION


Labor and Delivery

ULTRAM ER should not be used in pregnant women prior to or during labor unless the potential benefits outweigh the risks. Safe use in pregnancy has not been established. Chronic use during pregnancy may lead to physical dependence and post-partum withdrawal symptoms in the newborn (see DRUG ABUSE AND ADDICTION ). Tramadol has been shown to cross the placenta. The mean ratio of serum tramadol in the umbilical veins compared to maternal veins was 0.83 for 40 women treated with tramadol HCl during labor.

The effect of ULTRAM ER, if any, on the later growth, development, and functional maturation of the child is unknown.

Nursing Mothers


ULTRAM ER is not recommended for obstetrical preoperative medication or for post-delivery analgesia in nursing mothers because its safety in infants and newborns has not been studied. Following a single IV 100-mg dose of tramadol, the cumulative excretion in breast milk within sixteen hours postdose was 100 µg of tramadol (0.1% of the maternal dose) and 27 µg of M1.

Pediatric Use


The safety and efficacy of ULTRAM ER in patients under 18 years of age have not been established. The use of ULTRAM ER in the pediatric population is not recommended.

Geriatric Use


Nine-hundred-one elderly (65 years of age or older) subjects were exposed to ULTRAM ER in clinical trials. Of those subjects, 156 were 75 years of age and older. In general, higher incidence rates of adverse events were observed for patients older than 65 years of age compared with patients 65 years and younger, particularly for the following adverse events: constipation, fatigue, weakness, postural hypotension and dyspepsia. For this reason, ULTRAM ER should be used with great caution in patients older than 75 years of age (see CLINICAL PHARMACOLOGY and DOSAGE AND ADMINISTRATION ).

Adverse Reactions


ULTRAM ER was administered to a total of 3108 patients during studies conducted in the U.S. These included four double-blind studies in patients with osteoarthritis and/or chronic low back pain and one open-label study in patients with chronic non-malignant pain. A total of 901 patients were 65 years or older. The frequency of adverse events generally7 increased with doses from 100 mg to 400 mg in the two pooled, twelve-week, randomized, double-blind, placebo-controlled studies in patients with chronic non-malignant pain (see Table 2).
Table 2: Incidence (%) of patients with adverse event rates ≥ 5% from two 12-week placebo-controlled studies in patients with moderate to moderately severe chronic pain by dose (N=1811).
ULTRAM ER Placebo
MedDRA Preferred Term 100 mg(N=403)n (%) 200 mg(N=400)n (%) 300 mg(N=400)n (%) 400 mg(N=202)n (%) (N=406)n (%)
Dizziness(not vertigo) 64 (15.9) 81 (20.3) 90 (22.5) 57 (28.2) 28 (6.9)
Nausea 61 (15.1) 90 (22.5) 102 (25.5) 53 (26.2) 32 (7.9)
Constipation 49 (12.2) 68 (17.0) 85 (21.3) 60 (29.7) 17 (4.2)
Headache 49 (12.2) 62 (15.5) 46 (11.5) 32 (15.8) 43 (10.6)
Somnolence 33 (8.2) 45 (11.3) 29 (7.3) 41 (20.3) 7 (1.7)
Flushing 31 (7.7) 40 (10.0) 35 (8.8) 32 (15.8) 18 (4.4)
Pruritus 25 (6.2) 34 (8.5) 30 (7.5) 24 (11.9) 4 (1.0)
Vomiting 20 (5.0) 29 (7.3) 34 (8.5) 19 (9.4) 11 (2.7)
Insomnia 26 (6.5) 32 (8.0) 36 (9.0) 22 (10.9) 13 (3.2)
Dry Mouth 20 (5.0) 29 (7.3) 39 (9.8) 18 (8.9) 6 (1.5)
Diarrhea 15 (3.7) 27 (6.8) 37 (8.5) 10 (5.0) 17 (4.2)
Asthenia 14 (3.5) 24 (6.0) 26 (6.5) 13 (6.4) 7 (1.7)
Postural hypotension 7 (1.7) 17 (4.3) 8 (2.0) 11 (5.4) 9 (2.2)
Sweating increased 6 (1.5) 8 (2.0) 15 (3.8) 13 (6.4) 1 (0.2)
Anorexia 3 (0.7) 7 (1.8) 21 (5.3) 12 (5.9) 1 (0.2)

The following adverse events were reported from all the chronic pain studies (N=3108).

The uls below include adverse events not otherwise noted in Table 2.


Adverse events with incidence rates of 1.0% to <5.0%

Eye disorders: vision blurred

Gastrointestinal disorders: abdominal pain upper, dyspepsia, abdominal pain, sore throat

General disorders: weakness, pain, feeling hot, influenza like illness, fall, rigors, lethargy, pyrexia, chest pain

Infections and infestations: nasopharyngitis, upper respiratory tract infection, sinusitis, influenza, gastroenteritis viral, urinary tract infection, bronchitis

Investigations: blood creatine phosphokinase increased, weight decreased

Metabolism and nutrition disorders: appetite decreased

Musculoskeletal, connective tissue and bone disorders: arthralgia, back pain, pain in limb, neck pain

Nervous system disorders: tremor, paresthesia, hypoesthesia

Psychiatric disorders: nervousness, anxiety, depression, restlessness

Respiratory, thoracic and mediastinal disorders: sneezing, cough, rhinorrhea, nasal congestion, dyspnea, sinus congestion

Skin and subcutaneous tissue disorders: sweating increased, dermatitis

Vascular disorders: hot flushes, vasodilatation


Adverse events with incidence rates of 0.5% to <1.0% and serious adverse events reported in at least 2 patients.

Cardiac disorders: palpitations, myocardial infarction

Ear and labyrinth disorders: tinnitus, vertigo

Gastrointestinal disorders: flatulence, toothache, constipation aggravated, appendicitis, pancreatitis

General disorders: feeling jittery, edema lower limb, shivering, joint swelling, malaise, drug withdrawal syndrome, peripheral swelling

Hepato-biliary disorders: cholelithiasis, cholecystitis

Infections and infestations: cellulitis, ear infection, gastroenteritis, pneumonia, viral infection

Injury and poisoning: joint sprain, muscle injury

Investigations: alanine aminotransferase increased, blood pressure increased, aspartate aminotransferase increased, heart rate increased, blood glucose increased, liver function tests abnormal ,

Musculoskeletal, connective tissue and bone disorders: muscle cramps, muscle spasms, joint stiffness, muscle twitching, myalgia, osteoarthritis aggravated

Nervous system disorders: migraine, sedation, syncope, disturbance in attention, dizziness aggravated

Psychiatric disorders: euphoric mood, irritability, libido decreased, sleep disorder, agitation, disorientation, abnormal dreams

Renal and urinary disorders: difficulty in micturition, urinary frequency, hematuria, dysuria, urinary retention

Respiratory, thoracic and mediastinal disorders: yawning

Skin and subcutaneous tissue disorders: contusion, piloerection, clamminess, night sweats, urticaria

Vascular disorders: hypertension aggravated, hypertension, peripheral ischemia

Overdosage


Acute overdosage with tramadol can be manifested by respiratory depression, somnolence progressing to stupor or coma, skeletal muscle flaccidity, cold and clammy skin, constricted pupils, bradycardia, hypotension, and death.

Deaths due to overdose have been reported with abuse and misuse of tramadol by ingesting, inhaling, or injecting the crushed tablets. Review of case reports has indicated that the risk of fatal overdose is further increased when tramadol is abused concurrently with alcohol or other CNS depressants, including other opioids.

In the treatment of tramadol overdosage, primary attention should be given to the re-establishment of a patent airway and institution of assisted or controlled ventilation. Supportive measures (including oxygen and vasopressors) should be employed in the management of circulatory shock and pulmonary edema accompanying overdose as indicated. Cardiac arrest or arrhythmias may require cardiac massage or defibrillation.

While naloxone will reverse some, but not all, symptoms caused by overdosage with tramadol, the risk of seizures is also increased with naloxone administration. In animals convulsions following the administration of toxic doses of ULTRAM ER could be suppressed with barbiturates or benzodiazepines but were increased with naloxone. Naloxone administration did not change the lethality of an overdose in mice. Hemodialysis is not expected to be helpful in an overdose because it removes less than 7% of the administered dose in a 4-hour dialysis period.

Dosage And Administration


ULTRAM ER should not be used in patients with:
  • creatinine clearance less than 30 mL/min,
  • severe hepatic impairment (Child-Pugh Class C)

(See PRECAUTIONS, Use in Renal and Hepatic Disease ).

ULTRAM ER must be swallowed whole and must not be chewed, crushed, or split (see WARNINGS, Misuse, Abuse and Diversion of Opioids and DRUG ABUSE AND ADDICTION ).


Adults (18 years of age and over)


Patients Not Currently on Tramadol Immediate-Release Products

For patients not currently treated with tramadol immediate-release (IR) products, ULTRAM ER should be initiated at a dose of 100 mg once daily and titrated up as necessary by 100-mg increments every five days to relief of pain and depending upon tolerability. ULTRAM ER should not be administered at a dose exceeding 300 mg per day.


Patients Currently on Tramadol Immediate-Release Products

For patients maintained on tramadol IR products, calculate the 24-hour tramadol IR dose and initiate a total daily dose of ULTRAM ER rounded down to the next lowest 100 mg increment. The dose may subsequently be individualized according to patient need. Due to limitations in flexibility of dose selection with ULTRAM ER, some patients maintained on tramadol IR products may not be able to convert to ULTRAM ER. ULTRAM ER should not be administered at a dose exceeding 300 mg per day. The concomitant use of ULTRAM ER with other tramadol products is not recommended (see WARNINGS ).


Individualization of Dose

Good pain management practice dictates that the dose be individualized according to patient need using the lowest beneficial dose. Start at the lowest possible dose and titrate upward as tolerated to achieve an adequate effect. Clinical studies of ULTRAM ER have not demonstrated a clinical benefit at a total daily dose exceeding 300 mg.

In general, dosing of an elderly patient (over 65 years of age) should be initiated cautiously, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal or cardiac function and of concomitant disease or other drug therapy. ULTRAM ER should be administered with even greater caution in patients over 75 years, due to the greater frequency of adverse events seen in this population.

How Supplied


ULTRAM ER (tramadol hydrochloride) Extended-release tablets are supplied in the following package and dose strength forms:

100 mg: Round, convex, white to off-white tablets imprinted with "100" over "ER" on one side in black ink

Bottle of 30 tablets – NDC 21695-292-30

200 mg: Round, convex, white to off-white tablets imprinted with "200" over "ER" on one side in black ink

Bottle of 30 tablets – NDC 21695-563-30

300 mg: Round, convex, white to off-white tablets imprinted with "300" over "ER" on one side in black ink

Bottle of 30 tablets – NDC 21695-913-30

Store at 25°C (77°F); excursions permitted to 15-30°C (59 - 86°F).


Manufactured by:Biovail Corporation, Mississauga, ON L5N 8M5, Canada

Made in Canada

Distributed by:PriCara, a unit of Ortho-McNeil, Inc., Raritan, NJ 08869

Repackaged by:

Rebel Distributors Corp

Thousand Oaks, CA 91320

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