Olanzapine (olanzapine 5 mg) Dailymed

6 Adverse Reactions

When using olanzapine and fluoxetine in combination, also refer to the Adverse Reactions section of the package insert for Symbyax.


Most common adverse reactions (≥ 5% and at least twice that for placebo) associated with:

Oral Olanzapine Monotherapy

• – postural hypotension, constipation, weight gain, dizziness, personality disorder, akathisia ( ) • Schizophrenia (Adults) 6.1
• – sedation, weight increased, headache, increased appetite, dizziness, abdominal pain, pain in extremity, fatigue, dry mouth ( ). • Schizophrenia (Adolescents) 6.1
• – asthenia, dry mouth, constipation, increased appetite, somnolence, dizziness, tremor ( ) • Manic or Mixed Episodes, Bipolar I Disorder (Adults) 6.1
• – sedation, weight gain, increased appetite, headache, fatigue, dizziness, dry mouth, abdominal pain, pain in extremity ( ) • Manic or Mixed Episodes, Bipolar I Disorder (Adolescents) 6.1

Combination of Olanzapine and Lithium or Valproate:

• - dry mouth, weight increased, increased appetite, dizziness, back pain, constipation, speech disorder, increased salivation, amnesia, paresthesia ) • Manic or Mixed Episodes, Bipolar I Disorder (Adults) (6.1

Also refer to the Adverse Reactions section of the package insert for Symbyax. ( ) Olanzapine and Fluoxetine in Combination: 6

To report SUSPECTED ADVERSE REACTIONS, contact TEVA USA, PHARMACOVIGILANCE at 1-866-832-8537 or drug.safety@tevapharm.com; or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch

6.1 Clinical Trials Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect or predict the rates observed in practice.  

Clinical Trials in Adults

The information below for olanzapine is derived from a clinical trial database for olanzapine consisting of 8661 adult patients with approximately 4165 patient-years of exposure to oral olanzapine. This database includes: (1) 2500 patients who participated in multiple-dose oral olanzapine premarketing trials in schizophrenia and Alzheimer’s disease representing approximately 1122 patient-years of exposure as of February 14, 1995; (2) 182 patients who participated in oral olanzapine premarketing bipolar I disorder (manic or mixed episodes) trials representing approximately 66 patient-years of exposure; (3) 191 patients who participated in an oral olanzapine trial of patients having various psychiatric symptoms in association with Alzheimer’s disease representing approximately 29 patient-years of exposure; and (4) 5788 patients from 88 additional oral olanzapine clinical trials as of December 31, 2001. In addition, information from the premarketing 6 week clinical study database for olanzapine in combination with lithium or valproate, consisting of 224 patients who participated in bipolar I disorder (manic or mixed episodes) trials with approximately 22 patient-years of exposure, is included below.

The conditions and duration of treatment with olanzapine varied greatly and included (in overlapping categories) open-label and double-blind phases of studies, inpatients and outpatients, fixed-dose and dose-titration studies, and short-term or longer-term exposure. Adverse reactions were assessed by collecting adverse reactions, results of physical examinations, vital signs, weights, laboratory analytes, ECGs, chest x-rays, and results of ophthalmologic examinations.

Certain portions of the discussion below relating to objective or numeric safety parameters, namely, dose-dependent adverse reactions, vital sign changes, weight gain, laboratory changes, and ECG changes are derived from studies in patients with schizophrenia and have not been duplicated for bipolar I disorder (manic or mixed episodes) or agitation. However, this information is also generally applicable to bipolar I disorder (manic or mixed episodes) and agitation.

Adverse reactions during exposure were obtained by spontaneous report and recorded by clinical investigators using terminology of their own choosing. Consequently, it is not possible to provide a meaningful estimate of the proportion of individuals experiencing adverse reactions without first grouping similar types of reactions into a smaller number of standardized reaction categories. In the tables and tabulations that follow, MedDRA and COSTART Dictionary terminology has been used to classify reported adverse reactions.

The stated frequencies of adverse reactions represent the proportion of individuals who experienced, at least once, a treatment-emergent adverse reaction of the type uled. A reaction was considered treatment emergent if it occurred for the first time or worsened while receiving therapy following baseline evaluation. The reported reactions do not include those reaction terms that were so general as to be uninformative. Reactions uled elsewhere in labeling may not be repeated below. It is important to emphasize that, although the reactions occurred during treatment with olanzapine, they were not necessarily caused by it. The entire label should be read to gain a complete understanding of the safety profile of olanzapine.

The prescriber should be aware that the figures in the tables and tabulations cannot be used to predict the incidence of side effects in the course of usual medical practice where patient characteristics and other factors differ from those that prevailed in the clinical trials. Similarly, the cited frequencies cannot be compared with figures obtained from other clinical investigations involving different treatments, uses, and investigators. The cited figures, however, do provide the prescribing physician with some basis for estimating the relative contribution of drug and nondrug factors to the adverse reactions incidence in the population studied.

Incidence of Adverse Reactions in Short-Term, Placebo-Controlled and Combination Trials

The following findings are based on premarketing trials of oral olanzapine for schizophrenia, bipolar I disorder (manic or mixed episodes), a subsequent trial of patients having various psychiatric symptoms in association with Alzheimer's disease, and premarketing combination trials.

Adverse Reactions Associated with Discontinuation of Treatment in Short-Term, Placebo-Controlled Trials

Schizophrenia

Overall, there was no difference in the incidence of discontinuation due to adverse reactions (5% for oral olanzapine vs. 6% for placebo). However, discontinuations due to increases in ALT were considered to be drug related (2% for oral olanzapine vs. 0% for placebo).

Bipolar I Disorder (Manic or Mixed Episodes) Monotherapy

Overall, there was no difference in the incidence of discontinuation due to adverse reactions (2% for oral olanzapine vs. 2% for placebo).

Adverse Reactions Associated with Discontinuation of Treatment in Short-Term Combination Trials

Bipolar I Disorder (Manic or Mixed Episodes), Olanzapine as Adjunct to Lithium or Valproate

In a study of patients who were already tolerating either lithium or valproate as monotherapy, discontinuation rates due to adverse reactions were 11% for the combination of oral olanzapine with lithium or valproate compared to 2% for patients who remained on lithium or valproate monotherapy. Discontinuations with the combination of oral olanzapine and lithium or valproate that occurred in more than 1 patient were: somnolence (3%), weight gain (1%), and peripheral edema (1%).

Commonly Observed Adverse Reactions in Short-Term, Placebo-Controlled Trials

The most commonly observed adverse reactions associated with the use of oral olanzapine (incidence of 5% or greater) and not observed at an equivalent incidence among placebo-treated patients (olanzapine incidence at least twice that for placebo) were:

Table 9: Common Treatment-Emergent Adverse Reactions Associated with the Use of Oral Olanzapine in 6 Week Trials – SCHIZOPHRENIA

Adverse Reaction	Percentage of Patients Reporting Event
	Olanzapine (N = 248)	Placebo (N = 118)
Postural hypotension	5	2
Constipation	9	3
Weight gain	6	1
Dizziness	11	4
Personality disorder  Personality disorder is the COSTART term for designating non-aggressive objectionable behavior	8	4
Akathisia	5	1

Table 10: Common Treatment-Emergent Adverse Reactions Associated with the Use of Oral Olanzapine in 3 Week and 4 Week Trials – Bipolar I Disorder (Manic or Mixed Episodes)

Adverse Reaction	Percentage of Patients Reporting Event
	Olanzapine (N = 125)	Placebo (N = 129)
Asthenia	15	6
Dry mouth	22	7
Constipation	11	5
Dyspepsia	11	5
Increased appetite	6	3
Somnolence	35	13
Dizziness	18	6
Tremor	6	3

Adverse Reactions Occurring at an Incidence of 2% or More Among Oral Olanzapine-Treated Patients in Short-Term, Placebo-Controlled Trials

enumerates the incidence, rounded to the nearest percent, of treatment-emergent adverse reactions that occurred in 2% or more of patients treated with oral olanzapine (doses ≥ 2.5 mg/day) and with incidence greater than placebo who participated in the acute phase of placebo-controlled trials. Table 11

Table 11: Treatment-Emergent Adverse Reactions: Incidence in Short-Term, Placebo-Controlled Clinical Trials with Oral Olanzapine

Body System/Adverse Reaction	Percentage of Patients Reporting Event
	Olanzapine (N = 532)	Placebo (N = 294)
Body as a Whole
Accidental Injury	12	8
Asthenia	10	9
Fever	6	2
Back pain	5	2
Chest Pain	3	1
Cardiovascular System
Postural hypotension	3	1
Tachycardia	3	1
Hypertension	2	1
Digestive System
Dry mouth	9	5
Constipation	9	4
Dyspepsia	7	5
Vomiting	4	3
Increased appetite	3	2
Hemic and Lymphatic System
Ecchymosis	5	3
Metabolic and Nutritional Disorders
Weight gain	5	3
Peripheral edema	3	1
Musculoskeletal System
Extremity pain (other than joint)	5	3
Joint pain	5	3
Nervous System
Somnolence	29	13
Insomnia	12	11
Dizziness	11	4
Abnormal gait	6	1
Tremor	4	3
Akathisia	3	2
Hypertonia	3	2
Articulation impairment	2	1
Respiratory System
Rhinitis	7	6
Cough increased	6	3
Pharyngitis	4	3
Special Senses
Amblyopia	3	2
Urogenital System
Urinary incontinence	2	1
Urinary tract infection	2	1

Commonly Observed Adverse Reactions in Short-Term Trials of Oral Olanzapine as Adjunct to Lithium or Valproate

In the bipolar I disorder (manic or mixed episodes) adjunct placebo-controlled trials, the most commonly observed adverse reactions associated with the combination of olanzapine and lithium or valproate (incidence of ≥ 5% and at least twice placebo) were:

Table 12: Common Treatment-Emergent Adverse Reactions Associated with the Use of Oral Olanzapine in 6 Week Adjunct to Lithium or Valproate Trials - Bipolar I Disorder (Manic or Mixed Episodes)

Adverse Reaction	Percentage of Patients Reporting Event
	Olanzapine with lithium or valproate (N = 229)	Placebo with lithium or valproate (N = 115)
Dry mouth	32	9
Weight gain	26	7
Increased appetite	24	8
Dizziness	14	7
Back pain	8	4
Constipation	8	4
Speech disorder	7	1
Increased salivation	6	2
Amnesia	5	2
Paresthesia	5	2

Adverse Reactions Occurring at an Incidence of 2% or More Among Oral Olanzapine-Treated Patients in Short-Term Trials of Olanzapine as Adjunct to Lithium or Valproate

enumerates the incidence, rounded to the nearest percent, of treatment-emergent adverse reactions that occurred in 2% or more of patients treated with the combination of olanzapine (doses ≥ 5 mg/day) and lithium or valproate and with incidence greater than lithium or valproate alone who participated in the acute phase of placebo-controlled combination trials. Table 13

Table 13: Treatment-Emergent Adverse Reactions: Incidence in Short-Term, Placebo-Controlled Clinical Trials of Oral Olanzapine as Adjunct to Lithium or Valproate

	Percentage of Patients Reporting Event
Body System/Adverse Reaction	Olanzapine with lithium or valproate (N = 229)	Placebo with lithium or valproate (N = 115)
Body as a Whole
Asthenia	18	13
Back pain	8	4
Accidental injury	4	2
Chest pain	3	2
Cardiovascular System
Hypertension	2	1
Digestive System
Dry mouth	32	9
Increased appetite	24	8
Thirst	10	6
Constipation	8	4
Increased salivation	6	2
Metabolic and Nutritional Disorders
Weight gain	26	7
Peripheral edema	6	4
Edema	2	1
Nervous System
Somnolence	52	27
Tremor	23	13
Depression	18	17
Dizziness	14	7
Speech disorder	7	1
Amnesia	5	2
Paresthesia	5	2
Apathy	4	3
Confusion	4	1
Euphoria	3	2
Incoordination	2	0
Respiratory System
Pharyngitis	4	1
Dyspnea	3	1
Skin and Appendages
Sweating	3	1
Acne	2	0
Dry skin	2	0
Special Senses
Amblyopia	9	5
Abnormal vision	2	0
Urogenital System
Dysmenorrhea Denominator used was for females only (olanzapine, N = 128; placebo, N = 51).	2	0
Vaginitis	2	0

For specific information about the adverse reactions observed with lithium or valproate, refer to the Adverse Reactions section of the package inserts for these other products.

Additional Findings Observed in Clinical Trials

Dose Dependency of Adverse Reactions in Short-Term, Placebo-Controlled Trials

Extrapyramidal Symptoms

The following table enumerates the percentage of patients with treatment-emergent extrapyramidal symptoms as assessed by categorical analyses of formal rating scales during acute therapy in a controlled clinical trial comparing oral olanzapine at 3 fixed doses with placebo in the treatment of schizophrenia in a 6 week trial.

Table 15: Treatment-Emergent Extrapyramidal Symptoms Assessed by Rating Scales Incidence in a Fixed Dosage Range, Placebo-Controlled Clinical Trial of Oral Olanzapine in Schizophrenia - Acute Phase

	Percentage of Patients Reporting Event
	Placebo	Olanzapine 5 ± 2.5 mg/day	Olanzapine 10 ± 2.5 mg/day	Olanzapine 15 ± 2.5 mg/day
Parkinsonism Percentage of patients with a Simpson-Angus Scale total score > 3.	15	14	12	14
Akathisia   Percentage of patients with a Barnes Akathisia Scale global score ≥ 2.	23	16	19	27

The following table enumerates the percentage of patients with treatment-emergent extrapyramidal symptoms as assessed by spontaneously reported adverse reactions during acute therapy in the same controlled clinical trial comparing olanzapine at 3 fixed doses with placebo in the treatment of schizophrenia in a 6 week trial.

Table 16: Treatment-Emergent Extrapyramidal Symptoms Assessed by Adverse Reactions Incidence in a Fixed Dosage Range, Placebo-Controlled Clinical Trial of Oral Olanzapine in Schizophrenia - Acute Phase

	Percentage of Patients Reporting Event
	Placebo (N = 68)	Olanzapine 5 ± 2.5 mg/day (N = 65)	Olanzapine 10 ± 2.5 mg/day (N = 64)	Olanzapine 15 ± 2.5 mg/day (N = 69)
Dystonic events    Patients with the following COSTART terms were counted in this category: dystonia, generalized spasm, neck rigidity, oculogyric crisis, opisthotonos, torticollis.	1	3	2	3
Parkinsonism events  Patients with the following COSTART terms were counted in this category: akinesia, cogwheel rigidity, extrapyramidal syndrome, hypertonia, hypokinesia, masked facies, tremor.	10	8	14	20
Akathisia events Patients with the following COSTART terms were counted in this category: akathisia, hyperkinesia.	1	5	11	10
Dyskinetic events   Patients with the following COSTART terms were counted in this category: buccoglossal syndrome, choreoathetosis, dyskinesia, tardive dyskinesia.	4	0	2	1
Residual events Patients with the following COSTART terms were counted in this category: movement disorder, myoclonus, twitching.	1	2	5	1
Any extrapyramidal event	16	15	25	32

 The following table enumerates the percentage of adolescent patients with treatment-emergent extrapyramidal symptoms as assessed by spontaneously reported adverse reactions during acute therapy (dose range: 2.5 to 20 mg/day).

Table 17: Treatment-Emergent Extrapyramidal Symptoms Assessed by Adverse Reactions Incidence in Placebo-Controlled Clinical Trials of Oral Olanzapine in Schizophrenia and Bipolar I Disorder – Adolescents

	Percentage of Patients Reporting Event
Categories Categories are based on Standard MedDRA Queries (SMQ) for extrapyramidal symptoms as defined in MedDRA version 12.0.	Placebo (N = 89)	Olanzapine (N = 179)
Dystonic events	0	1
Parkinsonism events	2	1
Akathisia events	4	6
Dyskinetic events	0	1
Nonspecific events	0	4
Any extrapyramidal event	6	10

Dystonia, Class Effect

Symptoms of dystonia, prolonged abnormal contractions of muscle groups, may occur in susceptible individuals during the first few days of treatment. Dystonic symptoms include: spasm of the neck muscles, sometimes progressing to tightness of the throat, swallowing difficulty, difficulty breathing, and/or protrusion of the tongue. While these symptoms can occur at low doses, the frequency and severity are greater with high potency and at higher doses of first generation antipsychotic drugs. In general, an elevated risk of acute dystonia may be observed in males and younger age groups receiving antipsychotics; however, events of dystonia have been reported infrequently (< 1%) with olanzapine use.

Other Adverse Reactions

The following table addresses dose relatedness for other adverse reactions using data from a schizophrenia trial involving fixed dosage ranges of oral olanzapine. It enumerates the percentage of patients with treatment-emergent adverse reactions for the 3 fixed-dose range groups and placebo. The data were analyzed using the Cochran-Armitage test, excluding the placebo group, and the table includes only those adverse reactions for which there was a trend.

Table 20: Percentage of Patients from a Schizophrenia Trial with Treatment-Emergent Adverse Reactions for the 3 Dose Range Groups and Placebo

	Percentage of Patients Reporting Event
Adverse Reaction	Placebo (N = 68)	Olanzapine 5 ± 2.5 mg/day (N = 65)	Olanzapine 10 ± 2.5 mg/day (N = 64)	Olanzapine 15 ± 2.5 mg/day (N = 69)
Asthenia	15	8	9	20
Dry mouth	4	3	5	13
Nausea	9	0	2	9
Somnolence	16	20	30	39
Tremor	3	0	5	7

Differences among Fixed-Dose Groups Observed in Other Olanzapine Clinical Trials

In a single 8 week randomized, double-blind, fixed-dose study comparing 10 (N = 199), 20 (N = 200) and 40 (N = 200) mg/day of oral olanzapine in patients with schizophrenia or schizoaffective disorder, differences among 3 dose groups were observed for the following safety outcomes: weight gain, prolactin elevation, fatigue and dizziness. Mean baseline to endpoint increase in weight (10 mg/day: 1.9 kg; 20 mg/day: 2.3 kg; 40 mg/day: 3 kg) was observed with significant differences between 10 vs 40 mg/day. Incidence of treatment-emergent prolactin elevation > 24.2 ng/mL (female) or > 18.77 ng/mL (male) at any time during the trial (10 mg/day: 31.2%; 20 mg/day: 42.7%; 40 mg/day: 61.1%) with significant differences between 10 vs 40 mg/day and 20 vs 40 mg/day; fatigue (10 mg/day: 1.5%; 20 mg/day: 2.1%; 40 mg/day: 6.6%) with significant differences between 10 vs 40 and 20 vs 40 mg/day; and dizziness (10 mg/day: 2.6%; 20 mg/day: 1.6%; 40 mg/day: 6.6%) with significant differences between 20 vs 40 mg, was observed.

Other Adverse Reactions Observed During the Clinical Trial Evaluation of Oral Olanzapine

Following is a ul of treatment-emergent adverse reactions reported by patients treated with oral olanzapine (at multiple doses ≥ 1 mg/day) in clinical trials. This uling is not intended to include reactions (1) already uled in previous tables or elsewhere in labeling, (2) for which a drug cause was remote, (3) which were so general as to be uninformative, (4) which were not considered to have significant clinical implications, or (5) which occurred at a rate equal to or less than placebo. Reactions are classified by body system using the following definitions: frequent adverse reactions are those occurring in at least 1/100 patients; infrequent adverse reactions are those occurring in 1/100 to 1/1000 patients; rare reactions are those occurring in fewer than 1/1000 patients.

— chills, face edema, photosensitivity reaction, suicide attempt ; chills and fever, hangover effect, sudden death .   Body as a Whole Infrequent: ¹ Rare: ¹

— cerebrovascular accident, vasodilatation.   Cardiovascular System Infrequent:

— nausea and vomiting, tongue edema; ileus, intestinal obstruction, liver fatty deposit.   Digestive System Infrequent: Rare:

— leukopenia, thrombocytopenia.   Hemic and Lymphatic System Infrequent:

— alkaline phosphatase increased, bilirubinemia, hypoproteinemia.   Metabolic and Nutritional Disorders Infrequent:

— osteoporosis.   Musculoskeletal System Rare:

— ataxia, dysarthria, libido decreased, stupor; coma.   Nervous System Infrequent: Rare:

— epistaxis; lung edema.   Respiratory System Infrequent: Rare:

— alopecia.   Skin and Appendages Infrequent:

— abnormality of accommodation, dry eyes; mydriasis.   Special Senses Infrequent: Rare:

— amenorrhea , breast pain, decreased menstruation, impotence , increased menstruation , menorrhagia , metrorrhagia , polyuria , urinary frequency, urinary retention, urinary urgency, urination impaired. Urogenital System Infrequent: ^{2 2 2 2 2 2}

These terms represent serious adverse events but do not meet the definition for adverse drug reactions. They are included here because of their seriousness.   ¹

Adjusted for gender. ²

Clinical Trials in Adolescent Patients (age 13 to 17 years)

Commonly Observed Adverse Reactions in Oral Olanzapine Short-Term, Placebo-Controlled Trials

Adverse reactions in adolescent patients treated with oral olanzapine (doses ≥ 2.5 mg) reported with an incidence of 5% or more and reported at least twice as frequently as placebo-treated patients are uled in . Table 21

Table 21: Treatment-Emergent Adverse Reactions of ≥ 5% Incidence Among Adolescents (13 to 17 Years Old) with Schizophrenia or Bipolar I Disorder (Manic or Mixed Episodes)

Adverse Reactions	Percentage of Patients Reporting Event
	6 Week Trial % Schizophrenia Patients		3 Week Trial % Bipolar Patients
	Olanzapine (N = 72)	Placebo (N = 35)	Olanzapine (N = 107)	Placebo (N = 54)
Sedation Patients with the following MedDRA terms were counted in this category: hypersomnia, lethargy, sedation, somnolence.	39	9	48	9
Weight increased	31	9	29	4
Headache	17	6	17	17
Increased appetite	17	9	29	4
Dizziness	8	3	7	2
Abdominal pain Patients with the following MedDRA terms were counted in this category: abdominal pain, abdominal pain lower, abdominal pain upper.	6	3	6	7
Pain in extremity	6	3	5	0
Fatigue	3	3	14	6
Dry mouth	4	0	7	0

Adverse Reactions Occurring at an Incidence of 2% or More among Oral Olanzapine-Treated Patients in Short-Term (3 to 6 weeks), Placebo-Controlled Trials

Adverse reactions in adolescent patients treated with oral olanzapine (doses ≥ 2.5 mg) reported with an incidence of 2% or more and greater than placebo are uled in . Table 22

Table 22: Treatment-Emergent Adverse Reactions of ≥ 2% Incidence among Adolescents (13 to 17 Years Old) (Combined Incidence from Short-Term, Placebo-Controlled Clinical Trials of Schizophrenia or Bipolar I Disorder [Manic or Mixed Episodes])

	Percentage of Patients Reporting Event
	Olanzapine	Placebo
Adverse Reaction	(N = 179)	(N = 89)
Sedation Patients with the following MedDRA terms were counted in this category: hypersomnia, lethargy, sedation, somnolence.	44	9
Weight increased	30	6
Increased appetite	24	6
Headache	17	12
Fatigue	9	4
Dizziness	7	2
Dry mouth	6	0
Pain in extremity	5	1
Constipation	4	0
Nasopharyngitis	4	2
Diarrhea	3	0
Restlessness	3	2
Liver enzymes increased The terms alanine aminotransferase (ALT), aspartate aminotransferase (AST), and hepatic enzyme were combined under liver enzymes.	8	1
Dyspepsia	3	1
Epistaxis	3	0
Respiratory tract infection Patients with the following MedDRA terms were counted in this category: lower respiratory tract infection, respiratory tract infection, respiratory tract infection viral, upper respiratory tract infection, viral upper respiratory tract infection.	3	2
Sinusitis	3	0
Arthralgia	2	0
Musculoskeletal stiffness	2	0

6.2 Vital Signs and Laboratory Studies

Vital Sign Changes

Oral olanzapine was associated with orthostatic hypotension and tachycardia in clinical trials [ ]. see Warnings and Precautions ( ) 5

Laboratory Changes

Olanzapine Monotherapy in Adults

An assessment of the premarketing experience for olanzapine revealed an association with asymptomatic increases in ALT, AST, and GGT. Within the original premarketing database of about 2400 adult patients with baseline ALT ≤ 90 IU/L, the incidence of ALT elevations to >200 IU/L was 2% (50/2381). None of these patients experienced jaundice or other symptoms attributable to liver impairment and most had transient changes that tended to normalize while olanzapine treatment was continued.

In placebo-controlled olanzapine monotherapy studies in adults, clinically significant ALT elevations (change from < 3 times the upper limit of normal [ULN] at baseline to ≥ 3 times ULN) were observed in 5% (77/1426) of patients exposed to olanzapine compared to 1% (10/1187) of patients exposed to placebo. ALT elevations ≥ 5 times ULN were observed in 2% (29/1438) of olanzapine-treated patients, compared to 0.3% (4/1196) of placebo-treated patients. ALT values returned to normal, or were decreasing, at last follow-up in the majority of patients who either continued treatment with olanzapine or discontinued olanzapine. No patient with elevated ALT values experienced jaundice, liver failure, or met the criteria for Hy’s Rule.

Rare postmarketing reports of hepatitis have been received. Very rare cases of cholestatic or mixed liver injury have also been reported in the postmarketing period.

Caution should be exercised in patients with signs and symptoms of hepatic impairment, in patients with pre-existing conditions associated with limited hepatic functional reserve, and in patients who are being treated with potentially hepatotoxic drugs.

Olanzapine administration was also associated with increases in serum prolactin [ ], with an asymptomatic elevation of the eosinophil count in 0.3% of patients, and with an increase in CPK. see Warnings and Precautions ( ) 5.15

  Olanzapine Monotherapy in Adolescents

In placebo-controlled clinical trials of adolescent patients with schizophrenia or bipolar I disorder (manic or mixed episodes), greater frequencies for the following treatment-emergent findings, at anytime, were observed in laboratory analytes compared to placebo: elevated ALT (≥ 3X ULN in patients with ALT at baseline < 3X ULN), (12% vs 2%); elevated AST (28% vs 4%); low total bilirubin (22% vs 7%); elevated GGT (10% vs 1%); and elevated prolactin (47% vs 7%).

In placebo-controlled olanzapine monotherapy studies in adolescents, clinically significant ALT elevations (change from < 3 times ULN at baseline to ≥ 3 times ULN) were observed in 12% (22/192) of patients exposed to olanzapine compared to 2% (2/109) of patients exposed to placebo. ALT elevations ≥ 5 times ULN were observed in 4% (8/192) of olanzapine-treated patients, compared to 1% (1/109) of placebo-treated patients. ALT values returned to normal, or were decreasing, at last follow-up in the majority of patients who either continued treatment with olanzapine or discontinued olanzapine. No adolescent patient with elevated ALT values experienced jaundice, liver failure, or met the criteria for Hy’s Rule.

ECG Changes

In pooled studies of adults as well as pooled studies of adolescents, there were no significant differences between olanzapine and placebo in the proportions of patients experiencing potentially important changes in ECG parameters, including QT, QTc (Fridericia corrected), and PR intervals. Olanzapine use was associated with a mean increase in heart rate compared to placebo (adults: +2.4 beats per minute vs no change with placebo; adolescents: +6.3 beats per minute vs -5.1 beats per minute with placebo). This increase in heart rate may be related to olanzapine’s potential for inducing orthostatic changes [ ]. see Warnings and Precautions ( ) 5.8

6.3 Postmarketing Experience

The following adverse reactions have been identified during post-approval use of olanzapine. Because these reactions are reported voluntarily from a population of uncertain size, it is difficult to reliably estimate their frequency or evaluate a causal relationship to drug exposure.

Adverse reactions reported since market introduction that were temporally (but not necessarily causally) related to olanzapine therapy include the following: allergic reaction (e.g., anaphylactoid reaction, angioedema, pruritus or urticaria), diabetic coma, diabetic ketoacidosis, discontinuation reaction (diaphoresis, nausea or vomiting), jaundice, neutropenia, pancreatitis, priapism, rash, rhabdomyolysis, and venous thromboembolic events (including pulmonary embolism and deep venous thrombosis). Random cholesterol levels of ≥ 240 mg/dL and random triglyceride levels of ≥ 1000 mg/dL have been reported.