Doxycycline
"I was prescribed Doxycycline the summer. I had moderate to severe acne and within a month my face had almost cleared all up. It was great. I continued taking the pill for a year and a half but as I continued I realized my acne was slowly coming back even with the pill. My face had become resistant to doxycycline so I now switched to another antibiotic. My only advice to you, try it if you want to but as many others have said it's only a temporary solution."