MASTO P 100 – Para Pharma

MASTO P 100 Para Pharma – Masterone Propionate

📖 Definition

Drostanolone Propionate (also called masterone propionate) is an anabolic-androgenic steroid (AAS).
It is a synthetic derivative of dihydrotestosterone (DHT) and functions as an androgen receptor agonist.
It has moderate anabolic and mild androgenic activity, which makes it especially suitable for athletes and even, historically, for women in medical contexts.

📜 History

Masterone Propionate was first described in 1959 and introduced for medical use in 1961.
Initially, it was prescribed under the brand names Masteron, Drolban and Masteril for the treatment of advanced breast cancer in women,
thanks to its anti-estrogenic properties.
Over time, its medical usage declined but it gained massive popularity among bodybuilders and athletes as a performance-enhancing compound.

⚗️ Pharmacology

Masterone Propionate acts as a prodrug of drostanolone, releasing the active hormone once metabolized.
It binds strongly to androgen receptors, enhancing protein synthesis and promoting muscle hardness.
Unlike many other steroids, it has no estrogenic activity, so it does not cause gynecomastia or water retention.
Its half-life is about 2 days, requiring frequent intramuscular injections for stable blood levels.

💪 Benefits

• Promotes lean muscle mass with a dry, hard appearance
• Strong anti-estrogenic effects – no aromatization
• Improved recovery and endurance
• Minimal water retention, ideal for competition prep
• Synergistic when stacked with other steroids

⚠️ Side Effects

Although considered mild compared to other anabolic steroids, Masterone Propionate can still cause side effects:

• Virilization symptoms in women (acne, voice deepening, hirsutism)
• Hair loss (due to DHT nature)
• Suppression of natural testosterone production
• Changes in lipid profile
• Injection site irritation

💉 Dosage

Typical male dosage: 300–600 mg per week, divided into injections every 2–3 days due to its short half-life.
Women (in rare cases): 50–100 mg per week, though risk of virilization is significant.
Note: Non-medical use is controlled or illicit in many countries.

📚 References

• Wikipedia: Drostanolone Propionate
• PubChem – Drostanolone Propionate