Starting Bupropion SR 100 mg Daily in a 57-Year-Old Female with Depression and ADHD
No, you should not start bupropion SR at 100 mg daily—the standard FDA-approved dosing for bupropion SR requires starting at 150 mg once daily in the morning for days 1-3, then increasing to 150 mg twice daily (maximum 300 mg/day) if tolerated. 1
Correct Dosing Protocol
The FDA-approved titration schedule for bupropion SR is:
- Days 1-3: 150 mg orally once daily in the morning
- Day 4 onwards: 150 mg orally twice daily (if tolerated)
- Maximum dose: 300 mg per day 2, 1
Starting at 100 mg daily is below the therapeutic threshold and not supported by evidence or FDA labeling. While some guidelines mention lower starting doses (37.5 mg for certain formulations), these refer to immediate-release preparations, not sustained-release 3.
Clinical Appropriateness for This Patient
Bupropion is an excellent choice for this patient with both depression and ADHD, as it addresses both conditions simultaneously:
For Depression
- Bupropion is FDA-approved for major depressive disorder at 300 mg daily 4
- It has demonstrated effectiveness for long-term treatment of recurrent major depression 4
- It's a dopamine/norepinephrine reuptake inhibitor, offering a different mechanism than SSRIs 5
For ADHD
- Low-quality evidence suggests bupropion decreases ADHD symptom severity (standardized mean difference -0.50) and increases clinical improvement rates (RR 1.50) 6
- Bupropion is considered a first-line treatment for adults with comorbid mood disorders and ADHD 7
- One randomized trial showed 64% response rate in ADHD adults treated with bupropion 8
- The evidence for ADHD efficacy is mixed with small sample sizes and short-term assessments, but clinical experience supports its use 9, 6
Critical Safety Screening Required
Before prescribing, you must screen for absolute contraindications 1:
Absolute Contraindications
- Seizure disorder or epilepsy history (bupropion lowers seizure threshold)
- Current or past eating disorder (anorexia nervosa or bulimia)
- Current use of MAO inhibitors (must have 2-week washout period)
- Abrupt discontinuation of alcohol or benzodiazepines (increases seizure risk)
- Allergy to bupropion
Important Cautions
- Seizure risk factors: head injury, brain tumor, stroke history
- Uncontrolled hypertension (monitor blood pressure regularly) 1
- Bipolar disorder risk factors (screen for personal/family history—can precipitate mania) 1
- Hepatic or renal impairment (dose adjustment needed)
Monitoring Plan
After starting at the correct dose (150 mg daily):
- Monitor for neuropsychiatric effects in first 2-4 weeks: worsening depression, suicidal ideation, agitation, unusual behavior 1
- Check blood pressure at baseline and periodically (hypertension reported in 2% of patients) 1
- Assess response at 4-8 weeks (full therapeutic trial requires this duration) 3
- Watch for seizures (risk increases with doses >300 mg/day) 1
- Evaluate for manic symptoms: increased energy, decreased sleep, racing thoughts, reckless behavior 1
Common Adverse Effects to Counsel About
The most common side effects (≥5% and twice placebo rate) include 1:
- Dry mouth
- Insomnia (give second dose before 3 PM to minimize) 3
- Nausea
- Tremor
- Sweating
- Agitation/anxiety
The tolerability profile is generally similar to placebo based on withdrawal rates due to adverse effects 6.
Special Considerations for This Patient
- Age 57: No specific dose adjustment needed for age alone, but assess for comorbid conditions
- Dual indication benefit: Treating both conditions with one medication improves adherence
- If she smokes: Bupropion has the added benefit of supporting smoking cessation 4
- If weight is a concern: Unlike many antidepressants, bupropion may promote modest weight loss 5
Bottom line: Start at 150 mg SR once daily (not 100 mg), ensure no contraindications exist, and titrate to 150 mg twice daily after 3 days if tolerated.