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Description
Mesterolone, commonly known as Proviron, is a synthetic androgenic compound derived from dihydrotestosterone (DHT). Unlike many anabolic agents, mesterolone exhibits strong androgenic properties with minimal anabolic activity. It is widely used as a pharmaceutical raw material in hormonal research and formulation development.



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What is Mesterolone (Proviron)?
Mesterolone, commonly known by its trade name Proviron, is an orally active androgenic-anabolic steroid (AAS) derived from dihydrotestosterone (DHT). It was first introduced in the 1960s and is widely recognized for its androgenic properties with minimal anabolic activity. Proviron is a non-aromatizing steroid, meaning it does not convert to estrogen, making it particularly valuable in mitigating estrogenic side effects in certain applications.
Unlike other steroids, Proviron is not used for significant muscle-building purposes. Instead, it serves as a complementary agent in cycles for its ability to enhance free testosterone levels, reduce estrogen, and improve libido and mood.
Benefits of Mesterolone (Proviron)
1.Increased Free Testosterone:
●By binding to SHBG, Proviron ensures that more testosterone remains active, amplifying the benefits of other anabolic agents in a cycle.
2.Estrogen Control:
●Reduces estrogen-related complications such as water retention, gynecomastia, and bloating without causing severe suppression of natural estrogen levels.
3.Muscle Hardness and Vascularity:
●Its androgenic properties promote a lean, dry, and hard physique, especially during the cutting phase.
4.Improved Libido and Sexual Function:
●Enhances sexual health by improving libido, erection quality, and overall performance, even during periods of suppressed testosterone levels.
5.Enhanced Psychological Effects:
●Users report improved mood, reduced fatigue, and increased confidence, making it beneficial for mental well-being.
6.Synergistic Effects in Stacks:
●Proviron enhances the effectiveness of other steroids, making it a versatile addition to most anabolic cycles.
Clinical Data
Trade names
Proviron,Mesterolone,NSC-75054; SH-60723; SH-723;1α-Methyl-4,5α-dihydrotestosterone; 1α-Methyl-DHT; CAS
1424-00-6 Molar mass
304.474 Formula
C20H32O2 Purity
Above 98%
Capacity/Bottle
White crystalline powder Key Features & Advantages
DHT-derived structure with strong androgenic affinity
Does not aromatize into estrogen
High binding affinity to SHBG
Chemically stable under proper storage conditions
Well-documented compound in endocrine research
Common Applications
Pharmaceutical and hormonal research
Raw material for oral formulation development
Endocrine and androgen pathway studies
Laboratory reference material
Physical Stability & Storage Requirements
Store in a cool, dry place
Protect from moisture, heat, and direct light
Keep container tightly sealed
Stable when stored according to recommended conditions
Dosage and Administration
1.Medical Dosage:
●Typical Range: 25 mg to 75 mg daily.
●Frequency: Split into two or three doses throughout the day for consistent blood levels.
●Duration: Based on physician's recommendations, often for several weeks to months.
2.Performance-Enhancing Dosage:
●Beginner Dosage: 25 mg daily to assess tolerance.
●Intermediate to Advanced Dosage: 50 mg to 100 mg daily, depending on individual goals and cycle requirements.
●Maximum Dosage: Avoid exceeding 100 mg daily to minimize potential androgenic side effects.
3.Cycle Duration:
●Proviron is typically used for 6 to 12 weeks in a cycle.
●In bridging or post-cycle therapy (PCT), shorter durations of 4–6 weeks may suffice.
Conclusion
Mesterolone (Proviron) is a unique androgenic compound with multiple applications in medical and performance-enhancing contexts. Its ability to increase free testosterone levels, manage estrogenic side effects, and improve libido and mood makes it a valuable tool for athletes and bodybuilders. While it does not contribute significantly to muscle mass gains, its versatility, ease of use, and safety profile ensure its continued popularity in the fitness community. Proper dosing, cycle planning, and post-cycle care are essential to maximizing benefits while minimizing risks.
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