HCG vs Masteron
FDA Approved vs Moderate Research
synergistic Mechanism-based · 60% Masteron helps manage estrogen conversion from HCG. This is a common and recommended combination. Adjust AI dose based on bloodwork — avoid crashing estrogen.
Molecular Data
HCG Masteron
Weight 36,700 Da 304.47 Da (base)
Half-life 24-36 hours ~2 days (propionate), ~10 days (enanthate)
Chain 237 amino acids (alpha: 92, beta: 145) —
Type Heterodimeric glycoprotein DHT-derived anabolic steroid (C20H32O2)
Key Benefits
HCG
01 Maintains testicular function during TRT
02 Preserves fertility and prevents testicular atrophy
03 Stimulates endogenous testosterone production
04 Induces ovulation in women
05 FDA-approved for multiple indications
06 Well-established safety profile
Masteron
01 Produces a hard, dry, and grainy appearance by eliminating subcutaneous water retention
02 Mild anti-estrogenic properties that can reduce or replace the need for aromatase inhibitors on cycle
03 Does not aromatize, eliminating estrogen-mediated side effects from the compound itself
04 Enhances the visual effects of other steroids in a stack by reducing water retention and bloat
05 Modest increases in strength without significant weight gain, useful for weight-class athletes
06 Improves muscle density and vascularity at low body fat percentages
07 Well-tolerated with a relatively mild side effect profile compared to other anabolic steroids
08 Short detection window with propionate ester compared to many other injectable steroids
Dosing Protocols
HCG
250-1500 IU (lower for TRT adjunct, higher for fertility) / 2-3 times weekly, or every other day for lower doses
TRT Adjunct (Low) 250-500 IU Every other day
TRT Adjunct (Standard) 500-1000 IU Twice weekly
HCG Monotherapy 1500-2000 IU 2-3x weekly
Fertility (with FSH) 1500-2000 IU 2-3x weekly
Cryptorchidism (Pediatric) 1000-5000 IU 2-3x weekly for 3-4 weeks
Ovulation Trigger (Female) 5000-10,000 IU Single dose
PCT Protocol 1000-1500 IU Every other day for 2-3 weeks
Masteron
300-500 mg/week / Every other day (propionate) or 2x per week (enanthate)
Cutting / Aesthetic Enhancement 300-400 mg/week Every other day (propionate) or 2x per week (enanthate)
Contest Preparation 400-500 mg/week Every other day or daily (propionate)
AI Replacement / Estrogen Management 200-300 mg/week Every other day (propionate) or 2x per week (enanthate)
Side Effects
HCG
Gynecomastia (breast tenderness/swelling) due to increased estrogen
Headaches, irritability, and mood swings (especially initially)
Fluid retention and edema
Potential antibody formation with long-term use
Masteron
Hair loss and accelerated male pattern baldness (significant risk as a DHT derivative - the most commonly reported side effect)
Acne and increased skin oiliness, particularly on the back and shoulders
Suppression of natural testosterone production (requires PCT or ongoing TRT)
Injection site pain or discomfort (more common with propionate ester)
Mild aggression or irritability from elevated androgenic activity
HDL cholesterol suppression and adverse lipid profile changes
Contraindications
Hormone-sensitive cancers (prostate, breast)
Pregnancy (except as prescribed)
Precocious puberty risk in children
Prostate cancer (active or history of hormone-sensitive prostate cancer)
Breast cancer in males
Pregnancy or potential for pregnancy (causes virilization of female fetus)
Known hypersensitivity to drostanolone or any formulation components
Severe hepatic impairment
Pre-existing significant hair loss where further androgenic exposure is unacceptable
Polycythemia (hematocrit above 54% at baseline)
Uncontrolled cardiovascular disease or severe dyslipidemia
Research Evidence
HCG Masteron
Status FDA Approved Moderate Research
References 5 studies 5 studies
Latest 2024 March 2020
FDA Approved Yes No
This comparison is for educational and research purposes only. Consult a healthcare professional before use.