Blackstone Labs : Letro XT Estrogen Blocker

Letro XT is an all in one PCT formula and testosterone booster that is designed to help you normalise hormones following a prohormone or AAS cycle. Following your cycle, your natural testosterone levels will be very low, but your estrogen will remain within range of normal levels. If the ratio of testosterone to estrogen favours estrogen, this can cause unwanted side effects such as gyno, reduced strength and decreased ability to build muscle.

This is where Letro XT can help. Using non-androgenic testosterone boosters, Letro XT will help shift the balance back in favour of testosterone and in favour of anabolism. Letro doesn’t have any androgenic metabolites that could cause HPTA (hypothalamic pituitary testes axis) suppression. This make it an effective supplement for anyone seeking a PCT supplement that targets estrogen minimisation especially. 

INGREDIENT OVERVIEW

3b-hydroxy-androsta-1,4,6-triene-17-one

This is an aromatase inhibitor that permanently binds to the aromatase enzyme. In studies, this reduces estrogen biosynthesis and significantly increases the levels of endogenous steroids such as DHT and testosterone in humans. It has a prolonged half life which means you only need to take it once a day, unlike other anti-estrogens.

3b-hydroxy-androsta-4,6-diene-17-one

This compound is another AI that binds permanently to the aromatase enzyme, effectively stopping the conversion of testosterone to estrogen.

Androsta-3,5-Diene-7,17-Dione

This powerful product also known as Armistane, works by decreasing circulating levels of estrogen in the body. It helps to reduce the amount of androgens in the body that can convert to estrogen through aromatase enzymes. Fans of this compound alone may prefer to consider Fusion Supplements Arimistane in case they feel Letro XT suppresses estrogen too much (which can cause a negative effect on mood and joint integrity to name a couple of sides associated with very low estrogen).