What is a good acne medication?

acne medication
Katie asked:


I don’t have terrible acne. But I do break out from time to time. I have been dealing with acne my whole life. I jump from medication to medication, but nothing seems to work as well as I want it to. I still break out. My dermatologist has me on Benzaclin and Differin. They both make my acne go away quicker than usual, but I would like a medication that will prevent acne, not just slowly reduce it. The only downfall is I don’t want one that will dry out my skin. Is there even such a thing?