When I first saw my current psychiatrist, he bumped my Bupropion from 200 mg to 300 mg. I couldn't sleep, was extremely thirsty, anxious, felt physically "antsy", panic attacks, etc. Bupropion is a stimulant. I've even read that, metabolically, (but I'm not a doctor so maybe this may be an extreme interpretation), it has more in common with cocaine than SSRIs. Anyways, it really helps me and has few side effects when I am prescribed at the 150 mg dosage. Supposedly, 300 mg is a typical dosage but we all have different reactions and metabolize our medications differently.
Myst