Can minocyline be used temporarily?

I saw a new dermatologist today. I am already using Differin and Clindamycin Phosphate topically. She gave me a prescription for Minocycline today...200 mg a day. She said to try it for two months and see what happens. I'm a little hesitant about taking it because I feel like taking an antibiotic long term will be detrimental to my health. Is Minocycline bad for you?