proviron-labDrug Class: Androgen; Anabolic Steroid
Main Active Substance: Mesterolone
Concentration: 25 mg/tab
Presentation: 50 Tablets in Sachet
Elimination Half-Life: 12 Hours
Recommended Dosage: 25 – 100 mg/day
Anabolic Ratio: 150% of Testosterone
Androgenic Ratio: 400% of Testosterone
Acne: Yes
Hepatotoxicity: Low
Aromatization: No
Manufacturer: 7Lab Pharm, Switzerland, Europe


At one time, Proviron-lab (the active chemical substance Mesterolone) was almost the only salvation from problems with libido in older men. Before its creation, no one knew how to deal with sexual weakness in men after 40 years. But after the invention of Mesterolone, the issue of androgen deficiency, impaired spermatogenesis (combined with Chorionic Gonadotropin) and genital undevelopment was reliably resolved with the participation of Proviron-lab. Naturally, its steroid effects were immediately noticed by bodybuilders and the substance was immediately adopted during preparation.

You can buy Proviron-lab at fairest price in  our online store. Only with us is it more reliable than in a pharmacy, an individual approach to the client, the opportunity to get acquainted with the reviews and convenient delivery by mail.

Mesterolone is an anabolic steroid derivative of dihydrotestosterone. This drug is characterized by a weak anabolic and powerful androgenic effect. In fact, Proviron-lab has a similar hormonal effect of Testosterone. Its action is extremely direct: anti-estrogenic. This drug never holds water and actively contributes to its removal from the body. Enhances the activity of other steroids (Stano-lab 20, Mastolab-200, Primalab-100, Oxano-lab 20 and Trenolab-A 100). Increases blood volume and raises the level of free (active) Testosterone.


  • improving muscle quality and general appearance;
  • additional metabolic acceleration;
  • enhanced action in parallel with anabolic steroids;
  • increased libido and free testosterone;
  • mood boost, improved sleep and libido.


The main purpose of Mesterolone is for cutting period. Here it is excellent in promoting active fat burning and improving muscle quality. On the ground, Proviron-lab will raise the level of free Testosterone and enhance the effect of other anabolics. In rare cases, it can act as a weak antiestrogen and help with the aromatization of Testosterone and Methandrostenolone on cycle, instead of Anastro-lab.

SPECIAL NOTE: Never take Proviron-lab in the period after the steroid cycle at PCT. Being an anabolic steroid – Mesterolone will not allow you to restore your Testosterone level. It does not save from the resulting gynecomastia. For this, there is a drug Tamoxi-lab.

The usual safe cycle duration of Mesterolone is 6 to 8 weeks. This drug is not methyl and does not have direct toxicity to the liver. Dosage in the range of 25-100 mg per day, depending on your goals and level of preparation.


  • suppression of your testosterone levels;
  • baldness, hair growth in unexpected places, sweating, oily and rough skin, prostate growth;
  • acne;
  • blood clotting and rising blood pressure;
  • heartburn and loss of appetite.