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Proviron (Mesterolone,Provironos, Mestoranum, Provironum, Proviroxyl, Vistimon)

Proviron (Mesterolone,Provironos, Mestoranum, Provironum, Proviroxyl, Vistimon)
-62 %
Proviron (Mesterolone,Provironos, Mestoranum, Provironum, Proviroxyl, Vistimon)
  • Stock: In Stock
  • Model: Proviron
  • Weight: 0.03kg
  • Specification:25mg/Tab*50Tabs
150 samples sold
This offer ends in:
Ex Tax: $49.99

Common Names

Provironos, Mestoranum, Provironum, Proviroxyl, Vistimon, Proviron, Mesviron 25.

Drug Description

Proviron by Bonvari is a steroid drug widely used in both traditional and sports medicine. It is used primarily by athletes as part of heavy steroids cycles to prevent side effects, because it has anti-estrogenic properties (as an aromatase inhibitor) and the ability to increase free testosterone (by reducing the function of sex hormone binding globulin).

At the base of the product, the active ingredient, Mesterolone, is a structural derivative of dihydrotestosterone, which determines its properties.

Bonvari Proviron is primarily a moderately strong androgen (up to 150% of endogenous testosterone), and its anabolic effect is characterized as minimal (up to 40% of endogenous testosterone). This is a high-speed drug (up to 12-24 hours), therefore, to achieve optimal results, it is required to take it with a daily periodicity.

Proviron Composition

1 pill contains: 
Active substance: Mesterolone 25 mg

Bodybuilding Benefits

Proviron from Bayer with the proper construction and conduct of the course for sports purposes develops the following effects:

- Increased levels of free testosterone, as a consequence, increased libido, erectile function and spermatogenesis;
- Blocking of aromatization - prevents the development of estrogen-dependent side effects, like gynecomastia in men;
- Qualitative growth of muscles without excess water and fat, accompanied by increased density and relief of muscles.

Therapeutic Indication

Initially, this steroid was produced only for medical use according to indications from psycho vegetative diseases to male infertility, but it is currently most widely used as a doping agent for amateurs and sports professionals.


25-100 mg/day

Proviron Side Effects

It is important that Proviron from Bayer at the same time remains virtually safe steroid for men, rarely causing side effects: complications regarding the endocrine, reproductive and digestive systems are possible, from facial and body facial hair to uncontrolled erection. For women, the situation is different: products containing Mesterolone are generally not recommended, as they provoke virilization, from acne to the menstrual cycle.

Proviron Contraindications/Precautionary Measures

Not recommended in case of hypersensitivity to the drug, prostate cancer, liver neoplasms symptoms. During intake it is recommended to make regular rectal prostate investigations. Liver and kidney functions also should be monitored. The drug is not recommended to be used by adolescents to avoid premature cessation of growth and puberty.


In case of acute overdose toxicity is low. In case of chronic overdose is possible to develop priapism.

Proviron Stack/Cycle

Is used during in bulking cycles and in post cycle therapy in combination with standard anabolic steroids and testosterone products, as well as with Tamoxifen (NolvaxylNolvadex) to achieve a complete suppression of estrogen. Proviron is often used throughout the entire cycle.

Package Presentation

25 mg pills.


To be store in a dry place, protected from light, at a temperature of 15-25 ° C. Keep out of reach of children.


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