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Mesterolone – Proviron

Proviron, an anti-estrogenic medication, effectively blocks estrogen receptors in the brain, triggering a significant increase in the release of gonadotropins (LH and FSH), leading to enhanced testosterone production in the testes. However, it lacks direct anabolic or androgenic activity.

First synthesized in the 1970s, Proviron vanished from the market by the late 1990s, with the pharmaceutical giant Schering discontinuing its production. Today, online sellers claiming to offer Proviron are frequently dishonest, likely peddling counterfeit products as genuine versions. This drug is rarely mass-produced, and much of what is found online may be smuggled from regions such as Asia, Russia, and Mexico, raising serious doubts about authenticity.

Initially, it was tested for treating depression and anxiety in both men and women, revealing its ability to elevate gonadotropins and testosterone levels, which shifted its usage towards addressing fertility issues. Currently, Proviron is unavailable and not a viable solution for any medical condition; consequently, virtually all online offerings are probably counterfeit.

Indications

Historically, Proviron was prescribed for testosterone deficiency and male infertility caused by hypothalamic, pituitary, or testicular dysfunctions.

Pharmacology

Characterized by more androgenic than anabolic effects, Proviron was once favored by athletes and bodybuilders for recovery from testosterone suppression due to prolonged use of exogenous anabolic steroids. However, many bodybuilders have expressed disappointment, with most claiming Proviron does not enhance muscle mass or strength, leading to perceptions of it as ineffective. This could be compounded by the prevalence of counterfeit products, making laboratory testing essential for authenticating purchases.

Proviron exhibits anti-estrogen activity, similar to Nolvadex or Arimidex, effectively preventing breast enlargement and water retention, common side effects associated with anabolic steroids. Some users claim it enhances muscle definition; however, distinguishing its effects amidst multiple anabolic substances can be challenging. Primarily, it has been utilized during washout phases to sustain testosterone levels, yet knowledgeable athletes are now shifting towards alternatives like Arimidex or Nolvadex.

Females

In the past, Proviron has also been employed by women. Although some reports highlight its bodybuilding potential, numerous female users assert minimal effects. Due to its anti-estrogen properties, women using this drug should be closely monitored by healthcare professionals.

Dosage

The usual dosage of Mesterolone is 25 mg taken orally 2-3 times daily for several months, followed by maintenance therapy. Taken orally, Proviron rapidly enters the bloodstream, boasting a long half-life of approximately 12-24 hours, making it detectable in urine for at least 2 weeks post-dose. Often ineffective as a standalone anti-estrogen, it is combined with Tamoxifen or Arimidex, primarily during washout periods.

Side effects

As with any medication, Proviron can be associated with rare but concerning side effects, including:

• painful erections
• loss of libido
• general fatigue
• deepening of voice
• increased hair growth
• acne and oily skin

Contraindications

Proviron is advised against in:

• children
• pregnant women
• individuals with abnormal liver function
• those diagnosed with prostate cancer
• individuals with known allergies

Cost

When available, Proviron is costly, with quality and purity often questionable. Currently, it can only be accessed through black-market channels, primarily smuggled from Mexico and parts of the Far East. A 20 mg pill can range from $3-$4, yet it’s impossible to ascertain authenticity.

Detection

Proviron is banned by most sports governing bodies and is subject to urine screening. Its long half-life allows for detection up to 2 weeks after the last dose.

Legal

While possession of Proviron isn’t illegal, it is monitored closely by various sports organizations. In the USA, it falls under the Controlled Substances Act as a Schedule III drug.

Final Word

Proviron is relegated to the annals of history, with authentic products no longer accessible. Present offerings are likely counterfeit or contaminated. For individuals committed to fitness development, Arimidex presents a far superior alternative.