From my experience, the body adjusts to supraphysiological doses of AAS, except when there are irregular spikes with peaks and valleys. So going from 500-1500mg/wk might create some acne until the body adjusts, however steadily increasing to 1,500mg might create less zits...ime.
The only compound that really gives me zit problems at times is nandrolones and sometimes trenbolones. Other than that, I could be on 2 grams of test and still have a clear back(ne).
Doxy can be bought from some of the on-line vet supply houses
Diet, especially greasy foods and fast foods, give me more break-out problems than anything though.
Aromatase inhibitors help me if I have excessive estrogen levels too.
BMJ