"i began a 150 mg dosage once a day of bupropion 4 months ago. first week was a bit rough with the side effects but nothing i couldn&#039;t push through. day 3, felt a little dizzy and nauseous, no energy but only lasted 1 day. rest of the first week i experienced insomnia, couldn&#039;t shut off my brain at night and increased ringing in my ears. only remaining side effects after 4 months are ringing in my ears and very slight insomnia which i take an otc sleep aid for. the benefits far outweigh the side effects for me but everyone&#039;s chemistry is different. positive side effects are weight loss, less irritated, positive outlook and easier to manage my sadness."