I think the maximum dosage is 400 mg per day. I started on 300, then it was increased to 400. However, my hair became so thin that I was scared into slowly taking myself off ot it. I\'m currently only taking 100mgs, but am afraid to go off of it completely. Also, most other meds cause a loss of libido, and Mellbutrin does seem to give me energy which others I tried didn\'t. The thought of losing my hair is in itself a very depressing thought, so I guess I just have to get off completely. What good does it do to have a sex drive if you feel so unattractive because you\'re hair is gone?