Proviron – Mesterolone Bayer

Bayer Proviron is a strong androgen that has the ability to stop the aromatization of anabolics. Proviron is a good antiestrogen, which due to its ability to prevent the conversion of steroids into estrogen is a favorite preparation of athletes.

30,00лв. (15.34 €)


20 tablets (25 mg / 1 tab.)

Active substance






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Proviron is a dihydrotestosterone derivative with the active ingredient Mesterolon, a synthetic androgen that often enhances the action and effect of anabolic steroids and at the same time is a strong anti-estrogen.

Proviron has the ability to stop and prevent the aromatization of anabolic steroids (their conversion into estrogen). The compound can successfully fight estrogen-induced side effects.

If you are taking anabolic steroids or have decided to do so, it is a good idea to familiarize yourself with Proviron. A wonderful and very valuable androgenic preparation for those who use anabolic steroids.

Active substance: Mesterolone

Half-life: 12 hours, which requires the drug to be taken twice a day.

Detection time in the body:

Athletes undergoing a doping test should know that Proviron can be detected and detected in the body up to 6 weeks after the last intake.

Effect and action:

Proviron has the ability to prevent the conversion of steroids to estrogen, its anti-estrogenic effect is due to its ability to bind to the enzyme aromatase and thus prevent the enzyme from binding to other steroids. Proviron completely prevents the aromatization of anabolic steroids, effectively stops water retention in the body and prevents the occurrence of gynecomastia even after stopping the steroid cycle.

Another good action of Proviron (Mesterolone) is its ability to increase the effect of anabolic steroids. Much of the testosterone in the body is fast-acting because it is bound to globulin and albumin. When we take Proviron, it binds to these proteins and more testosterone remains free, which in turn increases protein synthesis, and hence the results. In medicine, Proviron is prescribed for reduced physical activity in middle and old age, easy fatigue, lack of concentration, poor memory, disorders of libido and potency, irritability, sleep disorders, depressed moods and general autonomic complaints can be overcome or improved by the use of the drug Proviron.


  This is only an information on the use of Proviron by athletes using anabolic steroids to help them deal with their side effects. This information should not be treated as a medical opinion and should not be used for self-medication! If necessary, consult a qualified doctor!


In sports and bodybuilding, Proviron plays an active role in steroid cycles. More sensitive individuals should have a blister of proviron on hand, especially if they use strong androgens such as Testosterone Enanthate. It is used either during a steroid cycle to suppress aromatization or to increase the effect of steroids, and is most often used at the end of the cycle, in after steroid therapy and a good exit from the anabolic cycle.

Intake and Dosage:

Proviron is taken and works well at a dose of 25 mg daily, but some athletes prefer to take 25 mg in the morning and 25 mg in the evening.

Side Effects:

In cases of frequent or prolonged erections, the dose should be reduced or discontinued to avoid damage to the penis.


 Proviron is for men only. It should not be taken by people with: Prostate cancer, previous or existing liver tumors.