Masteron (Drostanolone): the honest profile

Drostanolone enanthate, a longer-acting ester of Masteron. Provides sustained release with less frequent injections than propionate version. This is an evidence-graded harm-reduction reference — the compound profile (how it behaves and what that means for side-effect management), what it's used for, reported dosing, and the risks that actually matter. It is educational, not medical advice, and not encouragement to use a controlled substance.

By OptiPin Editorial·Last updated July 2026

Controlled substance · serious risks

Masteron (Drostanolone) is an anabolic-androgenic steroid — a Schedule III controlled substance in the US and a prescription-only drug, used here off-label/illicitly. It carries real risks: cardiovascular strain and adverse lipid changes, natural-testosterone suppression and fertility impact, and the risks of injectable anabolic use. It is on the WADA prohibited list. This page explains mechanism and risk for harm reduction; it is not a recommendation, and anabolic use should be supervised by a clinician with serial bloodwork.

Family

DHT-derived

Aromatizes

Oral / liver

Injectable

Half-life

Approximately 8 days

TL;DR

• Masteron (Drostanolone) — dht-derived, does not aromatize, injectable.
• Suppression: strong — plan recovery/PCT and post-cycle bloodwork.
• Used for hard, dry muscle, fat loss and cutting, pre-contest preparation.
• Legal: Schedule III controlled substance (US), WADA-banned — this is harm-reduction education, not encouragement to use.

What Masteron (Drostanolone) is

Drostanolone enanthate, a longer-acting ester of Masteron. Provides sustained release with less frequent injections than propionate version. Drostanolone enanthate (long ester); mild anti-estrogen activity at AR; 'hardening' compound; hair-loss risk in genetically susceptible. Sold as propionate (short) and enanthate (long) esters; kinetics differ by ester.

Compound profile — and why each row matters

The behaviour of an anabolic is mostly predictable from a few structural facts. Here is Masteron (Drostanolone)'s profile, with the management implication of each:

Androgen family	DHT-derived — Sets the base behaviour and side-effect family.
Aromatizes to estrogen	No — No estrogen conversion — classic estrogenic sides (bloat, gyno) are not driven by this compound.
17α-alkylated (oral)	No — Not 17α-alkylated; not liver-toxic by that mechanism.
Suppresses natural testosterone	Strong — Expect shutdown — a recovery/PCT plan and post-cycle bloodwork matter.
Hepatic load	Minimal — Low hepatic burden.
Prolactin risk	None
Hematocrit (RBC) risk	Moderate — Rising hematocrit thickens blood — monitor HCT; therapeutic blood donation is sometimes used.
Half-life	Approximately 8 days — Drives injection frequency and how long it lingers post-cycle (PCT timing runs off the slowest ester).

What Masteron (Drostanolone) is used for

• Hard, dry muscle
• Fat loss and cutting
• Pre-contest preparation
• Anti-estrogen effects
• Less frequent injections than propionate

Reported dosing

Injectable

200-400mg weekly, split into 1-2 injections. Typical range: 200-600mg weekly.

Commonly-reported ranges, presented for harm reduction and information only — not a dose recommendation. Doses, esters, and cycle length are decisions for a supervising clinician; higher doses raise risk more than results.

Cycling, suppression & recovery

Typical cycles: 8-12 weeks. Less frequent injections than propionate but similar effects and side effect profile. Because Masteron (Drostanolone) causes strong suppression of natural testosterone, a recovery plan (post-cycle therapy) and honest expectations about the come-down matter — see how a restart works and the broader cycle-structure guide.

Side effects & the labs that catch them

• Hair loss in susceptible individuals
• Suppression of natural testosterone
• Acne
• Increased aggression
• Cholesterol changes
• Possible prostate issues

Not approved for human use. Can cause significant hair loss. Monitor prostate health. PCT essential. Less frequent injections than propionate but similar risks. The bloodwork that carries a cycle — lipids, hematocrit, liver markers, and the hormone panel — is covered in the bloodwork guide.

Not a prescription, a protocol, or encouragement to use. Masteron (Drostanolone) is a controlled anabolic steroid with real cardiovascular, hepatic, hormonal, and fertility risks, some not fully reversible. OptiPin is a tracking tool; it does not recommend using anabolics. If you use, do it under medical supervision with serial bloodwork, and understand the legal status where you live.

Tracking Masteron (Drostanolone) in OptiPin

If you're running a cycle that includes Masteron (Drostanolone), OptiPin keeps every compound, dose, injection date, and lab on one timeline — with cycle-phase tagging so an off-week reads correctly, estimated clearance from each ester's half-life, and a phase-aware lab checklist. Your own data, on your device, ready to hand to a clinician.

Track a cycle properly

Compounds, doses, phases & labs on one timeline

Cycle phase tracking, estimated clearance, and a phase-aware bloodwork checklist — private, on-device.

Download on the App Store

FAQ

What is Masteron (Drostanolone)?

Drostanolone enanthate, a longer-acting ester of Masteron. Provides sustained release with less frequent injections than propionate version.

Does Masteron (Drostanolone) need an aromatase inhibitor?

Masteron (Drostanolone) does not aromatize to estrogen, so an aromatase inhibitor is generally not relevant for it. If run alongside a compound that does aromatize (like testosterone), estrogen management is about that compound, not Masteron (Drostanolone).

Is Masteron (Drostanolone) liver-toxic?

Masteron (Drostanolone) is not 17α-alkylated, so it does not carry the oral first-pass liver toxicity of methylated orals. It still has other risks (see the profile and side effects).

How is Masteron (Drostanolone) dosed?

Commonly reported: Injectable — 200-400mg weekly, split into 1-2 injections. Typical range: 200-600mg weekly.. This reflects community-reported patterns for harm reduction, not a recommendation — Masteron (Drostanolone) is a controlled substance and dosing should involve a supervising clinician.

What are Masteron (Drostanolone)'s side effects?

Reported effects include: hair loss in susceptible individuals, suppression of natural testosterone, acne, increased aggression, cholesterol changes, possible prostate issues. Anabolic steroids also carry cardiovascular, lipid, and fertility risks that are not always reversible; serial bloodwork is how these are caught early.

Is Masteron (Drostanolone) legal?

Masteron (Drostanolone) is an anabolic-androgenic steroid — a Schedule III controlled substance in the US (prescription-only, illicit without one) with similar restrictions in many countries, and it is on the WADA prohibited list for tested athletes. Legal status varies by jurisdiction; know your local law.

Educational only, not medical advice. Masteron (Drostanolone) is a controlled anabolic-androgenic steroid. OptiPin is a tracking tool and does not provide dosing or treatment advice, nor encourage use. Discuss any compound with a qualified clinician and understand your local law.

Evidence & further reading

Search the peer-reviewed literature for Drostanolone on PubMed (entry point to the primary evidence, not a specific citation).
US DEA — anabolic steroids fact sheet (Schedule III controlled-substance status).
How a cycle is structured & what to track · Bloodwork to monitor on cycle.

Primobolan · Proviron · Superdrol · Trenbolone · Cycle structure · PCT / restart · Bloodwork · All anabolics