Extreme Labs PCT is a multi purpose product! It has ingredients that have specially been picked to help increase natural testosterone levels and normal hormone activity. It contains ingredients such as Bulbine, Fenugreek and D-Aspartic acid which have all been used in many testosterone boosters as they have shown to work and increase natural levels if you’re deficient in testosterone. It also has added Vitamin D3 which has shown to turn into a steroid hormone which will increase muscle and keep you looking healthy.