Doxycycline
"I'm 24 and I started getting acne when I was 23.. Only on my chin area. 

I would get 1-3 cystic pimples at a time then, a few "normal" ones around them with constant clogged pores.

I tried everything for a year, diet change, different contraceptive pill, naturopathy, medicated face cleansers, antibiotic ointment, anti fungal antibiotics. Nothing worked, until I was prescribed Doxycycline, and a topical cream of Epiduo. 

Doxycycline has worked, I have been on it for 70 days now and my skin is smooth and clear, although it was a tough journey. 

I had sensitive skin, drying skin, and lots of sore pimples coming out (more than usual)

Push through that because it does take time. 

Epiduo was good to help the inflammation.. Don't apply much!"