Description Brand: Mutant Labs Product Name: Mutant Proviron Each Tablet Contains: Mesterolone 20mg  Each Tub Contains: 20mg x 50 Tablets 50 Tablets per sealed container UK EU Next Day Delivery on Proviron with Hench-Club Mesterolone 20mg Tablets. Is highly favoured by athletes for its ability to increase androgen levels when dieting or preparing for a contest, and as an anti-estrogen due to its intrinsic ability to antagonize the aromatase enzyme. Helps to preserver the natural testosterone levels highly androgenic and hardening effect.