Acne
"I&#039;m 27 and I just started taking doxycycline 2x a day 100mg. I saw my skin clearing up or at least no new pimples since day 1! I also use tretinoin cream at night and benzaclin/clindamycin in the morning. I had an upset stomach so far only for one day but the past two days I&#039;ve been dealing with a bad headache. I&#039;m hoping it&#039;ll go away soon. Other than that, this medicine works great on me!"