Doxycycline
"Before in 2015 I took doxycycline for 3 months and it barely did anything to my skin. I guess I could say it helped by 10% but that's it. My acne kept appearing and eventually I stopped because it wasn't working. So later in 2016 I was desperate so I started doxycycline again and now I've almost been on it for a month and I can say that it hasn't helped my hormonal acne AT ALL. But I don't have much medicine to resort to help with my persistent acne so I'm hoping it gets a little better. My diet is very clean with no dairy and still I don't see an improvement with this medicine."