Wellbutrin Sr Generic Name & Formulations
Bupropion HCl 100mg, 150mg, 200mg; sust-rel tabs.
XL tabs 150mg—30, 90; 300mg—30; SR tabs—60; Tabs—contact supplier
Wellbutrin Sr Indications
Major depressive disorder (MDD).
Wellbutrin Sr Dosage and Administration
Swallow whole. Avoid bedtime dosing. ≥18yrs: initially 150mg once daily in the AM for at least 3 days; if tolerated, increase to 150mg twice daily at least 8hrs apart. May increase after several weeks to max 200mg twice daily at least 8hrs apart. Moderate to severe hepatic impairment: max 100mg/day or 150mg every other day. Renal or mild hepatic impairment: consider reduced dose and/or dose frequency. Switching to Wellbutrin XL: give same total daily dose.
<18yrs: not established.
Wellbutrin Sr Contraindications
Seizure disorders. Bulimia. Anorexia nervosa. During or within 14 days of discontinuing MAOIs. Concomitant linezolid or IV methylene blue. Abrupt withdrawal of alcohol, benzodiazepines, barbiturates, or antiepileptics. Other forms of bupropion (eg, Zyban).
Wellbutrin Sr Boxed Warnings
Suicidal thoughts and behaviors.
Wellbutrin Sr Warnings/Precautions
Not for treating bipolar depression or for smoking cessation. Increased risk of suicidal thinking and behavior in children, adolescents, and young adults; monitor all patients for clinical worsening or unusual behavioral changes. Monitor for neuropsychiatric adverse events (eg, behavioral changes, agitation, depression, suicidal ideation); evaluate and consider treatment continuation under closer monitoring, or discontinuation if occur. Pre-existing psychiatric disorders. Bipolar disorder. Mania/hypomania. Psychosis. Risk of seizures; discontinue if seizure occurs: do not restart. Angle-closure glaucoma. Unstable heart disease. CHF. Recent MI. Monitor BP before initiating and periodically during treatment. Hepatic or renal impairment (monitor closely). Reevaluate periodically. Maintain at lowest effective dose. Write ℞ for smallest practical amount. Elderly. Pregnancy. Nursing mothers.
Wellbutrin Sr Pharmacokinetics
Wellbutrin Sr Interactions
See Contraindications. Do not start with concomitant linezolid or IV methylene blue; if treatment necessary, discontinue bupropion before starting. Monitor for 2 weeks or until 24hrs after last dose of linezolid or IV methylene blue, whichever comes first. Avoid alcohol. Levodopa, amantadine may increase CNS toxicity. Caution with drugs that lower seizure threshold (eg, theophylline, antidiabetics, anorectics, CNS stimulants, systemic steroids, tricyclic antidepressants, antipsychotics) or factors that lower seizure threshold (eg, opiate or cocaine addiction, excessive use of alcohol or sedatives). Caution with CYP2B6 inhibitors (eg, ticlopidine, clopidogrel) or drugs metabolized by CYP2D6 including antidepressants (eg, venlafaxine, nortriptyline, imipramine, desipramine, paroxetine, fluoxetine, sertraline), antipsychotics (eg, haloperidol, risperidone, thioridazine), β-blockers (eg, metoprolol), Class 1C antiarrhythmics (eg, propafenone, flecainide); consider dose reduction. Caution with CYP2B6 inducers (eg, ritonavir, lopinavir, efavirenz, carbamazepine, phenobarbital, phenytoin), tamoxifen; consider dose increase. May antagonize digoxin; monitor. May cause false (+) urine immunoassay test results for amphetamine.
Wellbutrin Sr Adverse Reactions
Dry mouth, nausea, insomnia, dizziness, pharyngitis, abdominal pain, agitation, anxiety, tremor, palpitation, sweating, tinnitus, myalgia, anorexia, urinary frequency, rash (rarely may be serious, eg, erythema multiforme, Stevens-Johnson syndrome), headache, blurred vision, tachycardia; hypertension.
Wellbutrin Sr Clinical Trials
Wellbutrin Sr Note
Wellbutrin Sr Patient Counseling