PCT (Post Cycle Therapy) is a hormone optimizer that can increase your natural testosterone production by as much as 400%, while combining a new powerful anti-aromatase that decreases estrogen levels in males an average of 50%. There is also a new and highly aromatase inhibiting compound that binds to aromatase more tightly and prevents estrogen conversion. Bottom line, when finishing any Anabolic Xtreme Cycle, no other recovery product will help you keep your gains like PCT.