I have had acne ever since I was 13 and I'm now 29. I've been on everything from accutane to creams... Last year my doctor put me on Doryx and I LOVED it, however, I was worried about how long I could be on it. I was on it for about 6 months and quit but my face started flaring with zits. Does anyone take this medication continually to keep acne from not flaring up?