Proviron

What is Proviron (Mesterolone) by SYN Pharma?

Proviron (Mesterolone) is a synthetic oral androgen developed for the treatment of low testosterone and male hypogonadism. While not classified as an anabolic steroid due to its weak muscle-building properties, Proviron is valued in performance enhancement for its powerful anti-estrogenic effects, ability to increase free testosterone, and its positive impact on libido and mood.

SYN Pharma’s Proviron is dosed with high accuracy and formulated for research-grade reliability. It is often included in both cutting and post-cycle stacks to support hormonal balance, hardening, and sexual health.

Proviron Benefits

Proviron is commonly used to enhance the effectiveness of other compounds in a stack. Documented and anecdotal benefits include:

• Reduces estrogen-related side effects: works as an oral DHT derivative that binds to SHBG and blocks estrogen receptors;
• Increases free testosterone: reduces SHBG, allowing more active testosterone to circulate;
• Improves libido and mood: supports androgen-driven wellness and sexual performance during or after cycles;
• Hardens physique: enhances definition and vascularity in lean individuals during contest prep or cutting.

Potential Side Effects

Proviron is typically well-tolerated due to its mild profile but may include:

• Androgenic effects: acne, oily skin, or hair thinning (especially in DHT-sensitive individuals);
• Suppression of natural testosterone with long-term use;
• Possible impact on HDL cholesterol with extended cycles or high doses.

Contraindications

Do not use Proviron if the subject has the following conditions:

• Prostate cancer or severe benign prostatic hyperplasia (BPH);
• Pregnancy or use by women (due to strong androgenic nature);
• Active liver disease or impaired kidney function.

Proviron Dosage and Administration

Typical research doses of Proviron range between **25–75 mg per day**, split into two even doses (AM/PM) due to its relatively short half-life. It is commonly used during the **entire length of a cycle or PCT window** for anti-estrogenic and libido-supporting benefits.

Cycle durations of **6–12 weeks** are most common. It does not require PCT on its own, but may support hormonal balance when used post-cycle with SERMs like Nolvadex.

8-Week Support or Dry-Hardening Protocol

Proviron as a Standalone or Add-On Agent

Common Questions About Proviron

Does Proviron build muscle?

Proviron is not considered anabolic and does not build muscle mass directly. However, it improves the **effectiveness of other anabolic compounds** by increasing free testosterone and reducing estrogenic interference.

Can Proviron be used during PCT?

Yes, at low doses. Proviron can support libido, mood, and androgen levels while avoiding estrogen rebound. However, it should be combined with a SERM (like Nolvadex) for full PCT recovery.

Does Proviron suppress natural testosterone?

At low to moderate doses and short cycles, suppression is minimal. Extended use or high doses may suppress endogenous testosterone production, though less severely than traditional anabolic steroids.

Is Proviron legal?

Mesterolone (Proviron) is a controlled substance in many countries. SYN Pharma provides Proviron exclusively for **research and investigational use** only. Not for human consumption.