Description

Technical Parameters

Mesterolone Product Introduction

Pure Steroid Powder | Mesterolone Muscle-Building Supplement Ingredient

CAS No .: 1424-00-6

EINECS number : 215-843-5

Molecular formula : C₂₀H₃₂O₂

Molecular weight : 304.48

Melting point : 152°C-156°C

Appearance : White crystalline powder

Usage

Mesterolone is an orally active androgen that is widely used for hormone regulation, sexual function improvement, and competitive sports preparation due to its potent anti-estrogenic properties and low anabolic activity .

✅ Anti-estrogen effect :

Directly block estrogen receptors to prevent/reverse gynecomastia

Does not suppress testosterone secretion (minimal impact on the HPTA axis)

✅ Sexual function enhancement :

Improves libido and erectile function (especially useful for recovery after a steroid cycle)

Improve sperm quality and quantity

✅ Competitive Sports Apps :

Suitable for the preparation stage to maintain muscle hardness and no water retention

Mesterolone Properties

Orally active :

The 17α-methylated structure enables high oral bioavailability

No injection required , take 1-2 times a day

Zero estrogen conversion :

Does not convert to estrogen via aromatase, so no risk of edema

Suitable for users who are sensitive to estrogen

Androgen Dominance :

Significant androgenic activity (approximately 50% of testosterone), but minimal anabolic activity

May cause hair loss and acne (those with genetic sensitivity should be cautious)

Liver safety :

The 17α-alkylated structure is less stressful on the liver than other oral steroids

Mesterolone Applications

Anti -Estrogen :

Dosage : 25-50 mg/day

Combination : + Anastrozole (dual estrogen blockade)

Sexual Function Restoration (Libido Boost) :

TRT supplement : 25mg/day to improve low libido

PCT cycle : 50mg/day, accelerates sexual function recovery

Contest Prep :

Last 4 weeks : 50mg/day + Winstrol

Effect : Extreme muscle separation

Precautions

Androgenic side effects : High doses may cause hair loss/acne

Effects on blood lipids : May lower HDL (good cholesterol)

Why choose Mesterolone?

The most potent oral anti-estrogen drug
Significant improvement in sexual function
Golden Aid for Preparing for Competition

Quality Assurance :

GMP -compliant production , each batch HPLC purity tested (≥99% )
Third-party laboratory report (COA) is included with the goods
Worldwide Shipping :
Original sealed packaging , private delivery

Conclusion

Mesterolone is a unique anti-estrogen androgen , particularly suitable for hormone regulation, sexual function recovery and competitive preparation . The recommended dose is 25-50mg/day .

Need a specific cycle plan ?

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