Doxycycline
"I am 18 years old, and had severe acne on my cheeks and chin area since I was about 14. Acne was the hardest thing I have ever went through and was ruining my confidence. I went to the dermatologist and got prescribed .1% tretinoin cream and doxycycline 100mg twice a day. I was on doxy for 4 months and my acne stayed EXACTLY the same. I always read the review on this site for this product, and promised myself I would write one. I did not work for me, but that doesn't mean it won't work for you. I have been off doxy for about four weeks now and I have ZERO pimples. I do have a lot of redness and LOTS of acne scars, but use mederma and have had one laser treatment for scars and am planning on having 2 more. Stay positive... it gets better!!"