Daily dosage for bupropionhcl?

Varies by response. Bupropion comes in several verstions--immediate release, twoce daily dosage form, and once-daily doseage form. Typical ranges are 200 to 450 mg a day. 450 mg is the maximum recommended doses because there is an increased risk of seizures above that dose. As with all antidepressants, the dose any individual needs varies and depends on condition being treated and side effects.
Daily dose. The usual dose is 300 mg daily but many people do well on the 150 mg daily dose.