Primobolan (Methenolone)
meh-THEN-uh-lone
Category
Compound type
Phase / Status
Controlled substance
Standard Dose
As directed
Half-life
Plasma elimination
Route(s)
Oral or Injectable
Research Stage
Research phase not specified; exercise appropriate caution.
Overview
Primobolan is the brand name commonly used for methenolone (an anabolic-androgenic steroid family member). Because methenolone is DHT-derived, it is not typically discussed as strongly estrogenic, but that does not remove the risk of androgen-related side effects. In non-clinical contexts, product purity and dosing accuracy can vary, so reports of "milder" experiences are not consistent across people.
Plain-language summary
Primobolan is the brand name commonly used for methenolone (an anabolic-androgenic steroid family member). Because methenolone is DHT-derived, it is not typically discussed as strongly estrogenic, but that does not remove the risk of androgen-related side effects. In non-clinical contexts, product purity and dosing accuracy can vary, so reports of "milder" experiences are not consistent across people.
Administration Routes
- Oral
- Injectable
Also known as
Mechanisms
DHT-derived anabolic steroid (methenolone)
Detailed mechanism
Methenolone (Primobolan) is a DHT-derived anabolic steroid available as the oral acetate ester and the injectable enanthate ester; it binds androgen receptors to upregulate protein synthesis and nitrogen retention in skeletal muscle without significant aromatization to estrogen. Unlike most 17-alpha-alkylated orals, the oral acetate form carries a 1-methyl modification at the A-ring rather than a C-17 alkyl group, which reduces hepatic stress while preserving sufficient oral bioavailability, though it remains less bioavailable than the injectable form. The injectable enanthate ester has a prolonged half-life of approximately 10 days due to slow depot release, providing stable plasma concentrations and reducing required injection frequency.
Safety
Side effects
- Hair loss
- Acne
- Cholesterol issues
- Expensive
Reported benefits
- Lean muscle gains
- No water retention
- Mild side effects
Safety profile
Consult medical professional before use
Clinical trials
See research status
Structure
Verified structure
Primobolan (Methenolone)
Exact 2D structure can be rendered from a PubChem-backed canonical SMILES string.
- Chemical Formula
- C22H32O3
- Molecular Weight
- 344.5 g/mol
- CAS Number
- 434-05-9
- InChIKey
- PGAUJQOPTMSERF-UHFFFAOYSA-N
Stack Context
No stack data available.
References
- 1View source
Pharmacology of anabolic steroids (British Journal of Sports Medicine)
2008
- 2View source
Effects of androgenic-anabolic steroids in athletes (Sports Medicine)
2004
- 3View source
Norbolethone: an anabolic steroid never marketed, found in a competitive athlete - anti-doping detection context (Rapid Communications in Mass Spectrometry)
2002
This profile summarizes research literature for education only. It is not medical advice, and it does not diagnose, treat, or recommend a dose. Consult a qualified professional before changing a protocol.