Bupropion Hydrochloride SR 150 mg Tablet, Film Coated, Extended Release, 60-count — NDC 63187-726-60 (Billing 63187-0726-60)

5 WARNINGS AND PRECAUTIONS • Seizure risk: The risk is dose-related. Can minimize risk by gradually increasing the dose and limiting daily dose to 400 mg. Discontinue if seizure occurs.

( 4 , 5.3 , 7.3 ) • Hypertension: Bupropion hydrochloride extended-release tablets (SR) can increase blood pressure. Monitor blood pressure before initiating treatment and periodically during treatment. ( 5.4 ) • Activation of mania/hypomania: Screen patients for bipolar disorder and monitor for these symptoms.

( 5.5 ) • Psychosis and other neuropsychiatric reactions: Instruct patients to contact a healthcare professional if such reactions occur. ( 5.6 ) • Angle-closure glaucoma: Angle-closure glaucoma has occurred in patients with untreated anatomically narrow angles treated with antidepressants. ( 5.7 )

5.1Suicidal Thoughts and Behaviors in Children, Adolescents, and Young Adults Patients with 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 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 (selective serotonin reuptake inhibitors [SSRIs] and others) show 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 clinical trials did not show an increase in the risk of suicidality with antidepressants compared with placebo in adults beyond age 24; there was a reduction with antidepressants compared with 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 subjects. 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 subjects.

There was considerable variation in risk of suicidality among drugs, but a tendency toward an increase in the younger subjects 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 subjects treated) are provided in Table 1. Table 1. Risk Differences in the Number of Suicidality Cases by Age Group in the Pooled Placebo-Controlled Trials of Antidepressants in Pediatric and Adult Subjects Age Range Drug-Placebo Difference in Number of Cases of Suicidality per 1,000 Subjects Treated Increases Compared With Placebo <18 14 additional cases 18 to 24 5 additional cases Decreases Compared With Placebo 25 to 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… [Excerpted — this section continues on DailyMed.]

6 ADVERSE REACTIONS The following adverse reactions are discussed in greater detail in other sections of the labeling: • Suicidal thoughts and behaviors in adolescents and young adults [see Boxed Warning , Warnings and Precautions ( 5.1 )] • Neuropsychiatric symptoms and suicide risk in smoking cessation treatment [see Boxed Warning , Warnings and Precautions ( 5.2 )] • Seizure [see Warnings and Precautions ( 5.3 )] • Hypertension [see Warnings and Precautions ( 5.4 )] • Activation of mania or hypomania [see Warnings and Precautions ( 5.5 )] • Psychosis and other neuropsychiatric reactions [see Warnings and Precautions ( 5.6 )] • Angle-closure glaucoma [see Warnings and Precautions ( 5.7 )] • Hypersensitivity reactions [see Warnings and Precautions ( 5.8 )] Most common adverse reactions (incidence greater than or equal to 5% and greater than or equal to 2% more than placebo rate) are: headache, dry mouth, nausea, insomnia, dizziness, pharyngitis, constipation, agitation, anxiety, abdominal pain, tinnitus, tremor, palpitation, myalgia, sweating, rash, and anorexia.

( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Actavis Laboratories FL, Inc. at 1-800-272-5525 or FDA at 1-800-FDA-1088 or Error! Hyperlink reference not valid..

6.1Clinical 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 with rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. Adverse Reactions Leading to Discontinuation of Treatment: In placebo‑controlled clinical trials, 4%, 9%, and 11% of the placebo, 300-mg-per-day, and 400-mg-per-day groups, respectively, discontinued treatment due to adverse reactions.

The specific adverse reactions leading to discontinuation in at least 1% of the 300-mg-per-day or 400-mg-per-day groups and at a rate at least twice the placebo rate are listed in Table 2. Table 2. Treatment Discontinuations Due to Adverse Reactions in Placebo‑Controlled Trials Adverse Reaction Placebo (n = 385) Bupropion Hydrochloride Extended-release Tablets (SR) 300 mg/day (n = 376) Bupropion Hydrochloride Extended-release Tablets (SR) 400 mg/day (n = 114) Rash 0.0% 2.4% 0.9% Nausea 0.3% 0.8% 1.8% Agitation 0.3% 0.3% 1.8% Migraine 0.3% 0.0% 1.8% Commonly Observed Adverse Reactions : Adverse reactions from Table 3 occurring in at least 5% of subjects treated with bupropion hydrochloride extended-release tablets (SR) and at a rate at least twice the placebo rate are listed below for the 300- and 400-mg-per-day dose groups.

Bupropion hydrochloride extended-release tablets (SR) 300 mg per day: Anorexia, dry mouth, rash, sweating, tinnitus, and tremor. Bupropion hydrochloride extended-release tablets (SR) 400 mg per day: Abdominal pain, agitation, anxiety, dizziness, dry mouth, insomnia, myalgia, nausea, palpitation, pharyngitis, sweating, tinnitus, and urinary frequency. Adverse reactions reported in placebo-controlled trials are presented in Table 3.

Reported adverse reactions were classified using a COSTART-based Dictionary. Table 3. Adverse Reactions Reported by at Least 1% of Subjects and at a Greater Frequency Than Placebo in Controlled Clinical Trials Body System/ Adverse Reaction Bupropion Hydrochloride Extended-release Tablets (SR) 300 mg/day (n = 376) Bupropion Hydrochloride Extended-release Tablets (SR) 400 mg/day (n = 114) Placebo (n = 385) Body (General) Headache 26% 25% 23% Infection 8% 9% 6% Abdominal pain 3% 9% 2% Asthenia 2% 4% 2% Chest pain 3% 4% 1% Pain 2% 3% 2% Fever 1% 2% — Cardiovascular Palpitation 2% 6% 2% Flushing 1% 4% — Migraine 1% 4% 1% Hot flashes 1% 3% 1% Digestive Dry mouth 17% 24% 7% Nausea 13% 18% 8% Constipation 10% 5% 7% Diarrhea 5% 7% 6% Anorexia 5% 3% 2% Vomiting 4% 2% 2% Dysphagia 0% 2% 0% Musculoskeletal Myalgia 2% 6% 3% Arthralgia 1% 4% 1% Arthritis 0% 2% 0% Twitch 1% 2% — Nervous system Insomnia 11% 16% 6% Dizziness 7% 11% 5% Agit… [Excerpted — this section continues on DailyMed.]

7 DRUG INTERACTIONS • CYP2B6 inducers: Dose increase may be necessary if coadministered with CYP2B6 inducers (e.g., ritonavir, lopinavir, efavirenz, carbamazepine, phenobarbital, and phenytoin) based on clinical response, but should not exceed the maximum recommended dose. ( 7.1 ) Drugs metabolized by CYP2D6: Bupropion inhibits CYP2D6 and can increase concentrations of: antidepressants (e.g., venlafaxine, nortriptyline, imipramine, desipramine, paroxetine, fluoxetine, sertraline), antipsychotics (e.g., haloperidol, risperidone, thioridazine), beta-blockers (e.g., metoprolol), and Type 1C antiarrhythmics (e.g., propafenone, flecainide).

Consider dose reduction when using with bupropion. ( 7.2 )

7.1Potential for Other Drugs to Affect Bupropion Hydrochloride Extended-release Tablets (SR) Bupropion is primarily metabolized to hydroxybupropion by CYP2B6. Therefore, the potential exists for drug interactions between bupropion hydrochloride extended-release tablets (SR) and drugs that are inhibitors or inducers of CYP2B6. Inhibitors of CYP2B6: Ticlopidine and Clopidogrel: Concomitant treatment with these drugs can increase bupropion exposure but decrease hydroxybupropion exposure.

Based on clinical response, dosage adjustment of bupropion hydrochloride extended-release tablets (SR) may be necessary when coadministered with CYP2B6 inhibitors (e.g., ticlopidine or clopidogrel) [see Clinical Pharmacology ( 12.3 )] . Inducers of CYP2B6: Ritonavir, Lopinavir, and Efavirenz: Concomitant treatment with these drugs can decrease bupropion and hydroxybupropion exposure. Dosage increase of bupropion hydrochloride extended-release tablets (SR) may be necessary when coadministered with ritonavir, lopinavir, or efavirenz [see Clinical Pharmacology ( 12.3 )] but should not exceed the maximum recommended dose.

Carbamazepine, Phenobarbital, Phenytoin: While not systematically studied, these drugs may induce the metabolism of bupropion and may decrease bupropion exposure [see Clinical Pharmacology ( 12.3 )] . If bupropion is used concomitantly with a CYP inducer, it may be necessary to increase the dose of bupropion, but the maximum recommended dose should not be exceeded.

7.2Potential for Bupropion Hydrochloride Extended-release Tablets (SR) to Affect Other Drugs Drugs Metabolized by CYP2D6: Bupropion and its metabolites (erythrohydrobupropion, threohydrobupropion, hydroxybupropion) are CYP2D6 inhibitors. Therefore, coadministration of bupropion hydrochloride extended-release tablets (SR) with drugs that are metabolized by CYP2D6 can increase the exposures of drugs that are substrates of CYP2D6. Such drugs include certain antidepressants (e.g., venlafaxine, nortriptyline, imipramine, desipramine, paroxetine, fluoxetine, and sertraline), antipsychotics (e.g., haloperidol, risperidone, thioridazine), beta-blockers (e.g., metoprolol), and Type 1C antiarrhythmics (e.g., propafenone and flecainide).

When used concomitantly with bupropion hydrochloride extended-release tablets (SR), it may be necessary to decrease the dose of these CYP2D6 substrates, particularly for drugs with a narrow therapeutic index. Drugs that require metabolic activation by CYP2D6 to be effective (e.g., tamoxifen) theoretically could have reduced efficacy when administered concomitantly with inhibitors of CYP2D6 such as bupropion. Patients treated concomitantly with bupropion hydrochloride extended-release tablets (SR) and such drugs may require increased doses of the drug [ see Clinical Pharmacology ( 12.3 )] .

7.3Drugs That Lower Seizure Threshold Use extreme caution when coadministering bupropion hydrochloride extended-release tablets (SR) with other drugs that lower seizure threshold (e.g., other bupropion products, antipsychotics, antidepressants, theophylline, or systemic corticosteroids). Use low initial doses and increase the dose gradually [see Contraindications ( 4 ), Warnings and Precautions ( 5.3 )] .

7.4Dopaminergic Drugs (Levodopa and Amantadine) Bupropion, levodop… [Excerpted — this section continues on DailyMed.]

9 DRUG ABUSE AND DEPENDENCE

9.1Controlled Substance Bupropion is not a controlled substance.

9.2Abuse Humans: Controlled clinical trials conducted in normal volunteers, in subjects with a history of multiple drug abuse, and in depressed subjects showed some increase in motor activity and agitation/excitement, often typical of central stimulant activity. In a population of individuals experienced with drugs of abuse, a single dose of 400 mg of bupropion produced mild amphetamine‑like activity as compared with placebo on the Morphine‑Benzedrine Subscale of the Addiction Research Center Inventories (ARCI) and a score greater than placebo but less than 15 mg of the Schedule II stimulant dextroamphetamine on the Liking Scale of the ARCI.

These scales measure general feelings of euphoria and drug liking which are often associated with abuse potential. Findings in clinical trials, however, are not known to reliably predict the abuse potential of drugs. Nonetheless, evidence from single‑dose trials does suggest that the recommended daily dosage of bupropion when administered orally in divided doses is not likely to be significantly reinforcing to amphetamine or CNS stimulant abusers.

However, higher doses (that could not be tested because of the risk of seizure) might be modestly attractive to those who abuse CNS stimulant drugs. Bupropion hydrochloride extended-release tablets (SR) are intended for oral use only. The inhalation of crushed tablets or injection of dissolved bupropion has been reported.

Seizures and/or cases of death have been reported when bupropion has been administered intranasally or by parenteral injection. Animals: Studies in rodents and primates demonstrated that bupropion exhibits some pharmacologic actions common to psychostimulants. In rodents, it has been shown to increase locomotor activity, elicit a mild stereotyped behavior response, and increase rates of responding in several schedule‑controlled behavior paradigms.

In primate models assessing the positive reinforcing effects of psychoactive drugs, bupropion was self-administered intravenously. In rats, bupropion produced amphetamine-like and cocaine-like discriminative stimulus effects in drug discrimination paradigms used to characterize the subjective effects of psychoactive drugs.

9.1Controlled Substance Bupropion is not a controlled substance.