Category: Oral Steroids
Substance: Mesterolone (Proviron)
Package: 25mg (50 pills)
Manufacturer: Alpha Pharma


Provibol by Alpha Pharma is a hormonal product whose action is based on Mesterolone (Proviron). The functional value of the product is limited to erection enhancement. Proviron also causes slight androgenic activity.

Athletes use the hormone during a steroid cycle. This combination accomplishes several tasks:

  • Steroids are not converted to estrogens – Proviron blocks aromatase
  • The risk of side effects such as swelling, fatty deposits or gynecomastia is reduced
  • The body continues to synthesise natural testosterone – Proviron increases the concentration of free hormone and inhibits globulin activity.

Effects of Proviron

Proviron increases libido and improves potency, which is why it is often combined with drugs that reduce libido. Such a combination evens out the hormonal background.

Bodybuilders use Proviron in preparation for competitions. The active ingredients make their muscles firm and shapely. It looks very spectacular, and this is what you need for performances.

Proviron is popular both among men and women. The effect of the drug is the same: the muscles become dense and sculpted. In contrast to men, girls are strictly advised not to use more than 25 mg per day. The cycle should not last more than 4 weeks. Otherwise, the process of masculinisation will start.

Proviron cycle

To achieve the desired effect and not to increase the risk of side effects, the dose should be strictly adhered to. It is recommended that men take 50 mg (2 times 25 mg) per day. This is best done after a meal. The maximum possible daily dose is 100 mg. Some athletes exceed the upper limit, which always increases the risk of adverse effects. A prolonged and painful erection after starting to take the drug is a sign that the dose is not correct.

Side effects of Proviron

Dosage is the main factor that determines the risk of side effects. If the recommendations are followed, there is no adverse effect on the liver. It is important to consider the duration of the cycle – such “harmlessness” is valid for several weeks.

Proviron does not affect the axis “hypothalamus-pituitary-testicular”, so the natural testosterone is produced normally.

The chemical properties of Proviron are similar to dihydrotestosterone. This similarity determines the same side effects:

  • Alopecia (especially vigilant for those with thick hair)
  • Prostate hypertrophy
  • Periodic examination of the prostate gland will prevent the development of undesirable effects

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