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Masteron (Drostanolone Propionate)
An anti-estrogenic injectable steroid with strong androgen effects. Excellent for cutting and hardening the physique. Acts as a natural aromatase inhibitor when stacked with other compounds. Best results seen at lower body fat levels (under 12%).
- Also known as: Mast P, Drostanolone
- Form: injectable
- Half-life: 2–3 days
- Typical cycle length: 8–12 weeks
- Typical dose (men): 300–600 mg/week
- Typical dose (women): 50–100 mg/week
- Anabolic : androgenic rating: 62 : 25
- PCT required: yes
Dosing by experience level
| Level | Dose | Frequency | Notes |
|---|---|---|---|
| Beginner | 300 mg/week | EOD | Stack with Test Prop for a cutting cycle |
| Intermediate | 400–500 mg/week | EOD | Classic Mast/Test/Tren cutting stack |
| Advanced | 600 mg/week | EOD | Can reduce or eliminate need for an AI |
Side effects
- Hair loss (strong DHT)
- Acne
- Testosterone suppression
- Increased aggression (mild)
Common stacks
- Testosterone Propionate
- Trenbolone Acetate
- Winstrol
- Anavar
Important notes
- Most effective at body fat under 12% — fat will mask the cosmetic effects
- Acts as a natural AI, may reduce or eliminate need for an aromatase inhibitor
- Propionate ester requires EOD injections for stable blood levels
- Popular for pre-competition prep and summer cutting cycles