Masteron Propionate — Dosing, Cycles, Half-Life & Side Effects

Masteron Propionate is a DHT-derived anabolic-androgenic steroid with a half-life of 2-3 days. Drostanolone propionate — DHT-derivative injectable used historically for breast cancer (Masteril) and in PED context for cutting/hardening via anti-estrogenic AR competition. Non-17α-alkylated; does not aromatize. Propionate ester gives 2-3 day depot half-life. This page is educational harm-reduction reference compiled from peer-reviewed literature — not medical advice, not an endorsement, not a recommendation to use. Consult a licensed clinician before any decision.

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Quick Facts

Class	DHT
Half-life	2-3 days
Detection window	30 days
Aromatization	No
Hepatotoxicity	None
Suppression	6/10
17α-alkylated	No
Administration	injectable

Typical Dosing Ranges

Common dose range: 350-525mg/week

Cycle length: 8-12 weeks

Time to steady state: ~10 days

Dose ranges are compiled from published pharmacokinetic studies and community-reported usage. Where a value is community-reported rather than clinically studied, this page and its structured data flag it. Lower end of any range is always the safer starting point.

Stacking Considerations

No structural stacking blockers. Standard harm-reduction rules apply: minimize total androgen load, minimize oral exposure, and monitor bloodwork.

PCT Requirements

This compound causes clinically meaningful HPTA suppression. Post-cycle therapy is recommended.
Depot clearance estimate: ~10 days post-last-dose before SERM start (5 × apparent depot half-life of 48h).
Never stack two SERMs. Extend a single SERM (tamoxifen OR enclomiphene/clomiphene) rather than combining.
Use the cycle planner to generate a full protocol based on your complete stack, not this compound alone.

Side Effect Profile

Hair loss
Frequent injections
Mild suppression
Acne

Known Interactions

No compound-specific interactions are catalogued in the current matrix. This does not mean no risk exists — it means there is no curated pairwise entry.

Monitoring (Bloodwork & Vitals)

Comprehensive metabolic panel (baseline, mid-cycle, post-cycle)
Lipid panel (total cholesterol, HDL, LDL, triglycerides)
CBC (hemoglobin, hematocrit — watch for erythrocytosis)
Sex-hormone panel (Total T, Free T, Estradiol sensitive, SHBG, LH, FSH)
Blood pressure (weekly self-check; flag systolic >140 or diastolic >90)

Baseline bloodwork is recommended before any cycle. Discontinue if liver enzymes exceed 3× upper limit of normal or if hematocrit exceeds 54%.

Frequently Asked Questions

What is the half-life of Masteron Propionate?

Masteron Propionate has a half-life of approximately 2-3 days. Clearance estimate: 48h � 5 = 240h = 10 days. This figure is used to determine injection frequency (for esters) and post-cycle clearance timing.

What is the typical dose range for Masteron Propionate?

Commonly reported ranges for Masteron Propionate: 350-525mg/week. Cycle length: 8-12 weeks. These are compiled from published studies and community-reported usage — individual response varies and lower end is always preferred.

Does Masteron Propionate suppress natural testosterone?

Masteron Propionate causes strong suppression of the HPTA axis (score 6/10). Post-cycle therapy (PCT) is recommended after use.

Does Masteron Propionate aromatize to estrogen?

Aromatization profile: No. Minimal to no aromatization expected, so aromatase inhibitors are not typically indicated for this compound alone.

What is Masteron Propionate typically used for?

Masteron Propionate is commonly used for: Cutting, Contest prep, Intermediate users. Intended-use context does not imply safety — every use case carries the same underlying pharmacological risks.

Citations

Disclaimer

StackItSmart is an independent harm-reduction reference. The content above is compiled from peer-reviewed literature and is not medical advice, not an endorsement, and not a recommendation to use Masteron Propionate. Performance-enhancing compounds carry legal, endocrine, cardiovascular, and hepatic risks. Consult a licensed clinician before any decision. StackItSmart does not provide sourcing, procurement, or dosing prescriptions.