SteroidWell-studiedDHT Derivative

Masteron Propionate

DHT-derived injectable (Drostanolone Propionate)

Also known as Mast P, masteron, drostanolone

Half-life

~2 days

What is Masteron Propionate?

Drostanolone propionate is a DHT-derived injectable used for hardening and cosmetic refinement.

How Masteron Propionate works

DHT-derived androgen receptor agonist with no aromatization and low water retention.

Benefits & uses

Muscle hardness/dryness
Anti-estrogenic (mild)
Cosmetic 'finishing' compound
No water retention

Common uses: Cutting, physique hardening, mild anti-estrogenic support.

Masteron Propionate dosage

Protokol doesn't recommend doses for prescription or controlled compounds. Any figures below are reference or observational reports — dosing should be set with a qualified clinician.

Commonly reported: Short propionate ester → frequent dosing (observational)Observational use reports — not a recommendation.

Masteron Propionate half-life

~2 days

Masteron Propionate side effects

Androgenic hair loss, lipid strain, possible prostate-related symptoms.

Hair loss in predisposed users
HDL reduction
Dry joints in low-estrogen states
HPTA suppression
Hair loss (DHT-derived — high risk if predisposed)
Acne
Lipid shift
Aggression reported

Warnings & monitoring

Requires bloodwork + medical monitoring
DHT-derived — accelerates hair loss in predisposed users
Best at low body fat (little benefit otherwise)

Preparation & storage

Storage: Room temperature.

Masteron Propionate interactions

with Testosterone
Compatible
Masteron (Drostanolone) acts as a mild aromatase inhibitor and hardening agent. Works best at lower body fat. Minimal estrogenic or progestenic activity — safe to combine with Testosterone base.
Timing: Run Masteron alongside Testosterone at 200–400 mg/week; useful as a mild AI replacement
with Testosterone
Compatible · low
Masteron (Drostanolone) has mild anti-estrogenic properties and provides a hardening, drying effect. Works best at lower body fat percentages. Low liver toxicity.
Timing: Masteron typically added last 8–12 weeks for contest prep or cutting

Commonly stacked with

Testosterone Propionate Trenbolone Acetate

Track Masteron Propionate in Protokol.

Log doses, model half-lives, check interactions, and line it all up against your bloodwork. Free on iPhone and Android.