Mesterolone – Proviron
Proviron acts primarily as an anti-estrogen, blocking estrogen receptors in the brain and stimulating the release of Gonadotropins (LH and FSH), which subsequently boosts testosterone production in the testes. Although it lacks direct anabolic or androgenic properties, its mechanism has garnered interest.
Synthesized in the 1970s, Proviron disappeared from the market by the late 1990s, with Schering ceasing its production. Claims of availability online often lead to counterfeit products, as there’s no mass manufacturing, and many sellers import fake versions from regions like Asia, Russia, and Mexico.
Initially researched for alleviating depression and anxiety in both men and women, it was later noted for its impact on Gonadotropin levels and testosterone enhancement, leading to its use in treating fertility issues. However, it’s now discontinued for medical use, with most online offerings likely to be fakes.
Indications
Proviron was once indicated for addressing testosterone deficiencies and male infertility linked to hypothalamic, pituitary, or testicular issues.
Pharmacology
With a focus on androgenic rather than anabolic effects, Proviron has been utilized by athletes to combat testosterone suppression following prolonged anabolic steroid use. However, many bodybuilders report disappointment, claiming it fails to enhance muscle mass or strength, viewing it as ineffective. Reports of counterfeits complicate the situation, with authenticity unverifiable without laboratory testing.
Proviron does exhibit anti-estrogen effects akin to Nolvadex and Arimidex, mitigating common side effects of anabolic steroids like gynecomastia and water retention. Some users report enhanced muscle definition, but given concurrent steroid use, attributing effects solely to Proviron remains challenging. Consequently, knowledgeable athletes have shifted to alternatives like Arimidex or Nolvadex.
Females
In the past, females used Proviron, with mixed reports on its efficacy. Due to its anti-estrogen properties, medical supervision is essential for female users.
Dosage
The typical dose of Mesterolone is 25 mg, taken orally 2-3 times daily for several months, followed by maintenance dosing. Oral administration results in rapid blood absorption, with a prolonged half-life of 12-24 hours, remaining detectable in urine for at least two weeks post-last dose. As it’s not a potent anti-estrogen, Proviron is often combined with Tamoxifen or Arimidex during the washout phase.
Side effects
Similar to any medication, Proviron can cause rare but concerning side effects, which may include:
- painful erections
- decreased libido
- fatigue
- voice deepening
- increased hair growth
- acne and oily skin
Contraindications
Proviron is not advised for:
- children
- pregnant women
- individuals with liver dysfunction
- those with prostate cancer
- people with known allergies
Cost
When it was available, Proviron was costly, raising questions about the quality and purity. Presently, it is predominantly found on the black market, often smuggled in from Mexico and the Far East, with 20 mg tablets priced between $3-$4, though authenticity is unverified.
Detection
Proviron is prohibited by most sporting organizations and can be detected in urine for up to two weeks due to its extended half-life.
Legal
While possessing Proviron isn’t illegal, it is tested for in athletics, and in the USA, it’s categorized as a controlled substance under schedule 3.
Final Word
Proviron belongs to history, with the genuine product no longer available. Current offerings are likely fraudulent or tainted. For those looking to enhance their physique, alternatives like Arimidex present a superior option.
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Anonymous (verified owner) –
جودة جيدة ونتائج، لكن غالي الثمن بعض الشيء.
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Makes everything else seem weak.
Patricia V (verified owner) –
Muy bueno.
Anonymous (verified owner) –
Bastante eficaz. Casi perfecto.
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Exatamente o que eu precisava! Bayer Proviron 20 tabs (25 mg/tab) superou minhas expectativas.
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Real deal confirmed.
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Meh.
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Prodotto di altissima qualità. Bayer Proviron 20 tabs (25 mg/tab) è semplicemente il migliore.
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Could not imagine better results.
Anonymous (verified owner) –
Been using Bayer Proviron 20 tabs (25 mg/tab) for months now. Consistent results every time.
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First-class product.
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Above average for sure.
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I’m incredibly impressed with how quickly and effectively this worked. It’s transformed my performance completely.
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Real results
Anonymous (verified owner) –
Practically perfect in every way.
Shirin H (verified owner) –
Resultados decepcionantes. No lo recomendaría.
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بالتأكيد فوق المتوسط.
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太棒了。Bayer Proviron 20 tabs (25 mg/tab)是一款一流的产品。
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Amazing results consistently.
Iván J (verified owner) –
Not worth the money.
Kwang-ho E. (verified owner) –
La qualità c’è ma le istruzioni per il dosaggio potrebbero essere più chiare.
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جودة رائعة، نتائج رائعة. Bayer Proviron 20 tabs (25 mg/tab) رائع.
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The finest quality available anywhere.
Zbigniew J. (verified owner) –
Great results but took a bit longer than expected.
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Действительно хорошее качество. Рекомендовал бы.
Colin E (verified owner) –
A bien fonctionné mais a eu quelques effets secondaires mineurs.
Niklas A (verified owner) –
Funciona bem. Não posso reclamar.
Anonymous (verified owner) –
تجربة شراء مثالية. Bayer Proviron 20 tabs (25 mg/tab) رائع.
Ion Q. (verified owner) –
Работает как рекламировалось. Никаких сюрпризов.
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تأثيرات قوية. فقط غير متسق قليلاً.
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Anonymous (verified owner) –
Good quality though not quite as strong as I hoped.
Anonymous (verified owner) –
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Incredible value for the quality you get.
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Best product I’ve used in years of training.
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جودة استثنائية، نتائج ملحوظة. Bayer Proviron 20 tabs (25 mg/tab) رائع.
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Performance solide de ce Bayer Proviron 20 tabs (25 mg/tab).
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Simply the best in class.
Artem G. (verified owner) –
A bien fonctionné mais a eu quelques effets secondaires mineurs.
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Genuinely impressed with the quality and results.
Anonymous (verified owner) –
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Solide Leistung von diesem Bayer Proviron 20 tabs (25 mg/tab).
Ömer V (verified owner) –
Nice product. Works well enough.
Hülya I. (verified owner) –
Keine Beschwerden. Erledigt seinen Job gut.
Anonymous (verified owner) –
Impresionado con los efectos pero esperaba un poco más.
Anonymous (verified owner) –
جيد جداً.
Anonymous (verified owner) –
يعمل كما هو معلن عنه. لا مفاجآت.
Serena B. (verified owner) –
Acquisto assolutamente consigliato. Bayer Proviron 20 tabs (25 mg/tab) è fantastico.
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Il miglior Bayer Proviron 20 tabs (25 mg/tab) che abbia mai provato. Efficacia incredibile.
Anonymous (verified owner) –
Ideal for bulking season.
Xiaoming M. (verified owner) –
Got better results from much cheaper alternatives.
Keloni U (verified owner) –
Efficacia sorprendente. Bayer Proviron 20 tabs (25 mg/tab) fa esattamente ciò che promette.
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جيد جداً.
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Anonymous (verified owner) –
Decent.
Isabelle D (verified owner) –
Definitiv überdurchschnittlich.