I have been suffering from acne for 4 years. Around 3 years ago my acne got so bad (inflamed) that I went to the dermatologist and she prescribed me with Tetracycline. I took it for about 2 months and then i stopped because my acne cleared and i was having upset stomach (partly because I didnt take the protective pills which u r supposed to take when on antibiotic) I was very happy with the results. I would get the occasional spot here and there but my face and back were mainly clear. Only this summer I got something like cysts on my cheeks. They were just bumps under my skin which did not particularly hurt or anything. About a month ago my inflamed acne came back. I am 18 years old and I really hoped that by this age my acne would rather end then start again. I do recommend this antibiotic because it kept me clear for about 2 years. I might start it again.