Doxycycline
"I've had horrible acne, including a ton of cystic pimples all on my cheeks and a few on my forehead. I also have chest acne and back acne. I started taking doxycycline hyclate about 2 months ago and at first I felt like giving up and stop taking it. I didn't know the pill made you feel nauseous and I took it with a full glass of water and felt sick. A friend of mine told me she was taking the same pill and her doctor said if it makes you feel sick take food with it. So I did and I still take it today along with erythromycin and benzoyl peroxide. My skin has cleared up so much and I'm not constantly breaking out anymore. My skin isn't perfect but it is much better and it is slowly getting better. I will continue to take this antibiotic, I love it."