About Proviron

Bayer Proviron is a brand name for Mesterolone. Proviron was developed in 1934 by Shering which makes it among the oldest pharmaceutical steroids for therapeutic use. You may have never heard of it as it was never marketed in the USA, but is available around the world in places such as the UK, New Zealand and Mexico to name a few. We love Proviron because it does not shut down your natural testosterone production at low dose like 50mg per day.

Proviron shares many potent similarities to Masteron, Winstrol and Anavar. It is both anabolic and androgenic though it does not work as well for building large amounts of muscle due to the way it binds in the body. Proviron is dihydrotestosterone derived anabolic steroid, and it is structurally altered DTH hormone with addition of methyl group with carbon on one position. This enables the hormone to survive the oral ingestion since it is protected from hepatic breakdown. Proviron is among the few oral anabolic steroids which are not C17-alpha alkylated, but in its place, it carries methyl group. Proviron has an androgenic rating of about 30 to 40 and anabolic rating ranging from 100-150. Don’t be confused though, Proviron has a higher anabolic score than testosterone, but it portrays low anabolic properties.

The most well-known Proviron benefit is its capability to act as anti-estrogen through its action as an aromatase inhibitor. It can best be compared to Anastrozol (Arimidex), but is a bit weaker as an aromatase inhibitor. Proviron binds to Sex Hormone Binding Globulin (SHBG). This allows your Free testosterone levels to elevate, which means more to bind to Globulin to become total testosterone. This is a big part of why it is so effective for TRT.

Improve testosterone levels with Proviron

This drug has been used to increase testosterone levels. This hormone has various benefits such as improving muscle growth and libido enhancement. Every man needs Testosterone to maintain energy levels and vigor for life. Proviron has unique features which makes it an excellent way to enhance testosterone levels. In normal circumstances, testosterone hormone is mostly inactive since it’s bound by albumin and Sex Hormone Binding Globulin (SHBG).  Proviron which has an excellent affinity for SHBG, when well-taken binds with the SHBG, thus providing the testosterone with enough freedom to execute its duties freely. For people with testosterone deficiency then Proviron is the best drug to use.

Enhance muscle density

Proviron increases testosterone activities as well as other steroids in your body. That means protein synthesis will be enhanced and in turn, improve the muscle growth. Since Proviron binds to estroidal you will not develop estrogen build up from using this steroid. Proviron possesses an excellent affinity for aromatase enzyme which binds with testosterone as well as converting it into estrogen.

A great benefit of Proviron is that it will decrease water retention in your body. This will keep you looking lean and fit. A great way to get that lean, hard look. Proviron works well with other anabolic steroids, and you can include it in any steroid cycle for better results. Inform your doctor to help you find the right cycle and combination that will help you attain your desired results.

Erectile Dysfunction (ED) and Proviron

Erectile dysfunction is a problem facing many men. Proviron improves the levels of testosterone hormone in the body as well as providing it with an enabling environment to perform its duties properly. For men with impotence problems, Proviron has been a blessing. The drug has been excellent in the treatment of erectile problems in men.

Infertility Treatment with Proviron

Infertility in men results from the sperm production problem. Although no one can explain the real mechanism of male infertility, doctors have confirmed that sperm production depends highly on both androgens such as testosterone and gonadotropins which are responsible for stimulating sexual organs. In many cases, androgens have been used by doctors to treat the infertility problems in men, but they frequently reduce the gonadotropin secretions which makes it ineffective for prompting sperm production.

Proviron works by stimulating androgens in your body but has little effect on the gonadotropins. Proviron continues to be a popular drug in the treatment of male infertility.  Improved testosterone hormone levels in your body enhance your sexual ability and the fertility levels too.

Proviron Side Effects

Almost all drugs have side effects and proviron is a drug. Common side effects of Proviron:

1. Increased sex drive
2. Fluid retention
3. Increased Body Hair
4. Can lead to virilization in women when taken in high dosages
5. Safe drug for your liver

Although Proviron is an oral drug, it’s not toxic to your liver. This makes it among the safest steroids on the market. Many steroid users are not comfortable with frequent injections. Therefore, you can use Proviron tablets and still enjoy the benefits of increased testosterone levels. For testosterone deficiency, Proviron offers the best solution to both the young and the old. You can also use the drug together with other anabolic steroids such as testosterone enanthate or sustenon with no increased liver risk.


When you must not take it

Do not take Proviron if you have an allergy to:

1.mesterolone, the active ingredient in Proviron
2. any of the ingredients listed at the end of this leaflet.

Some of the symptoms of an allergic reaction may include:

1. shortness of breath
2. wheezing or difficulty breathing
3. swelling of the face, lips, tongue or other parts of the body
4. rash, itching or hives on the skin.

Do not take Proviron if you have:

1. prostate cancer
2. previous or existing liver tumours
3. male breast cancer
4. high blood calcium levels


De Souza, G. L., & Hallak, J. (2011). Anabolic steroids and male infertility: a comprehensive review. BJU international, 108(11), 1860-1865.
El Osta, R., Almont, T., Diligent, C., Hubert, N., Eschwège, P., & Hubert, J. (2016). Anabolic steroids abuse and male infertility. Basic and clinical andrology, 
26(1), 2.
Angell, P. J., Green, D. J., Lord, R., Gaze, D., Whyte, G., & George, K. P. (2018). Acute cardiovascular responses to resistance exercise in anabolic steroids users: A preliminary investigation. Science & Sports, 33(6), 

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