I know many that use it year around, whether on gear or not to keep that hard look for pictures etc.. While they do not have issues with HPTA, nor have I, I dont know anyone taking a dose that high, most use 50mg when taking alone, a few 75mgs, but nobody taking 100. When I experimented with 100, it seemed as if only the sides increased. I dont usually get acne, but 100mgs sure gave it to me.