Hi! I have used proviron in my cycles and can tell you about my experience. First, proviron is an androgen that is used to increase muscle mass and decrease estrogen levels in the body. However, as with all steroids, proviron has side effects. You should discuss possible risks with your doctor. Generally, it is recommended that you use 25-50 mg of proviron per day, and the cycle of use should be no more than 12 weeks. You can find mesterolone for sale at an online store. However, I would strongly recommend that you see a specialist before you start using steroids.