The lowest dose of Wellbutrin XL is 150 mg. This is the recommended Wellbutrin XL dosage to start with. However, , most ...

Form Starting dosage Maintenance dosage Maximum dosage bupropion XL 150 mg once per day 300 mg once per day 300 mg per day bupropion SR 150 mg once per day 150 mg twice per day (300 mg per day ...

Intervention. Random assignment of patients to placebo or SR bupropion treatment, 100, 150, or 300 mg/d, for 7 weeks (total duration of study was 52 weeks: 7 weeks of treatment and 45 weeks of ...