"i&#039;m 17 and started getting acne the beginning of freshman year. i was first put on benzyclin (idk how it&#039;s spelled) then i tried retin a. sophomore year and junior year i used face washes which only broke me out more. finally deciding to go back to the doctors after years for my acne, i explained how topical a hadn&#039;t worked for me so my doctor prescribed me bactrim. i never heard if it and was worried it wouldn&#039;t work although she did say it was a powerful antibiotic. so far it&#039;s been 3 months and i&#039;ve noticed a difference within the second week not drastic but a difference. i want to stay on as long as i can or until i&#039;m out of the acne stage. just make sure you are not allergic to sulfa"