A-HD is designed to support increased testosterone production while minimizing estrogen activity. Zero to little estrogen leads to a harder, leaner, more dry looking physique. No more holding water, no more bloated looks, just rock-hard shredded muscle. A-HD is the androgenic and estrogenic modulator of choice, as well as the top PCT (post cycle therapy), among all hardcore bodybuilders in the know. Ever wonder how to get that long lasting, hard-as-nails, dense, muscular look. This is it. A-HD is the ultra concentrated testosterone booster. Now in powder form. Don't waste your time with anything else because there IS absolutely nothing like A-HD.