Drostanolone Acetate
A very short-acting acetate ester of drostanolone (Masteron), requiring daily or every-other-day injection. Effects mirror drostanolone: a mild, non-aromatising DHT-derived anabolic with mild anti-estrogenic activity, favoured for hardening and cutting. Ester-specific human data are minimal.
01 Overview
Drostanolone acetate is drostanolone (2-methyl DHT) esterified with acetic acid, giving the shortest release of any Masteron form. The common commercial esters are propionate and enanthate; the acetate is an uncommon underground variant requiring very frequent injection to keep levels stable.
The active hormone is drostanolone, so effects and side effects match Masteron: it does not aromatise, has mild anti-estrogenic activity via aromatase interaction, and produces a hard, dry look valued in contest prep. It is moderately androgenic. Because there are no meaningful human trials of the acetate ester, ratings are low and inferred from drostanolone.
02 Mechanism
The acetate ester is rapidly hydrolysed to release drostanolone, a DHT derivative that binds the androgen receptor, does not aromatise, and can mildly interfere with aromatase, contributing to a 'dry' anti-estrogenic effect.
03 Dosing
| Tier | Dose | Route | Notes |
|---|---|---|---|
| Common (drostanolone-equivalent) | 300–500 mg/wk | IM | Very short ester; daily/EOD injections. Inferred from drostanolone. |
Ester comparison
| Ester | Half-life | Injection freq. | Testosterone by mass |
|---|
04 Effects
| Effect | Magnitude | Evidence | |
|---|---|---|---|
| Muscle hardness / drynessProduces a hard, defined look at low body fat; popular for contest prep. | cosmetic | Anecdotal | |
| Mild anti-estrogenic effectInteracts with aromatase, mildly reducing estrogenic activity in a stack. | Observational | ||
| Lean mass preservationHelps retain muscle in a deficit. | Observational |
05 Side effects
| Effect | Severity | Frequency | Evidence | Countermeasures |
|---|---|---|---|---|
| HPTA suppressionSuppresses endogenous testosterone. | Moderate | Universal | Clinical | |
| Androgenic hair lossAs a potent DHT derivative, can accelerate male-pattern hair loss. | Moderate | Common in predisposed | Observational | |
| Adverse lipid changesLowered HDL typical of non-aromatising androgens. | Moderate | Dose-dependent | Observational |