Post Cycle Therapy (PCT) is designed to boost Testosterone and lower the levels of estrogen in the body. Many testosterone boosting ingredients are used in PCT’s to boost a users natural test to above average levels. Boosting test will help users maintain muscle gained during cycle by helping to balance hormone levels, boost nutrient uptake and utilization. Estrogen Control ingredients are used during Post Cycle Therapy (PCT) to lower the bodies levels of estrogen, limit bonding of estrogen and sustain muscle gains from the cycle while also limiting the possibility of negative side effects. Some estrogen control blockers can also aid in the bodies productions of testosterone. Most estrogen control products fall into the SERM category (Selective Estrogen Receptor Modulator). EVERY user of, Prohrmones, must use PCT following each cycle to maintain gains and avoid side effects.