Drugs I have been on for acne:

1. Minocycline: works fairly well, but as an antibiotic need to take care with the doses and the duration of dosing as pancreas and liver problems can manifest.
2. Doxycycline: same effects as Minocycline but not as effective.
3. Isoretinoin: works phenomenally well, were you to take this at higher doses it might also cure your cancer. Seriously. Problems include escalating blood pressure and renal damage, amongst other possibilities.

I may give isoretinoin another chance, if that doesn't work, then perhaps some phototherapy. We'll see.