I started on 200mg bupropion SR about 3 months ago and recently asked my doctor to increase to therapeutic level of 300 mg daily. Received the Rx for 150 mg tablets and started taking 2x daily. I realized that the directions on bottle as per doctor instructions read "2 tablets twice daily". The pharmacist never questioned this when I picked it up but isn't 600mg a day- especially coming from 200mg extreme? Isn't this approaching toxic levels? I've only been taking 300 mg daily which seemed to finally help me but I was pretty shocked to realize that I could have been taking twice that if I followed the bottle instructions and no one flagged it... just wondering if any thoughts? I have considered changing doctors (and pharmacist!) but not sure?