Primobolan (methenolone)
Muscle & Strength · Injectable/oral anabolic
Tier C+
Bottom line
Read Off Label grades Primobolan (methenolone) as C+ (5.5/10) based on moderate evidence, med benefit magnitude, and a med-risk safety profile.
Famously favored by Arnold Schwarzenegger.
Typical use: Injectable: 200-600 mg/week; oral: 50-100 mg/day — Schedule III US; Rx history discontinued; banned sport.
What this is
Famously favored by Arnold Schwarzenegger. Mild profile makes it popular for women and for 'clean' cutting cycles, but correspondingly slow gains. Extensively counterfeited due to expense of genuine product.
Mechanism
DHT derivative; mildly anabolic, non-aromatizing; oral acetate form (methenolone acetate) or injectable enanthate; historically used in premature infants and osteoporosis
Dose & route
Injectable: 200-600 mg/week; oral: 50-100 mg/day
Citations
- https://pubmed.ncbi.nlm.nih.gov/15705014/
- https://pubmed.ncbi.nlm.nih.gov/8624417/
- https://pubmed.ncbi.nlm.nih.gov/27036153/
Links go to the source. If a link is dead or you want something re-checked, let me know.
Common questions
- Does Primobolan (methenolone) work?
- Read Off Label rates the evidence for Primobolan (methenolone) as Moderate and the benefit magnitude as med, producing an overall grade of C+ (5.5/10). Famously favored by Arnold Schwarzenegger.
- Is Primobolan (methenolone) safe?
- Primobolan (methenolone) has a med risk profile in published human data. Legal status: Schedule III US; Rx history discontinued; banned sport. This is not medical advice — see the disclaimer.
- What is the typical dose for Primobolan (methenolone)?
- Injectable: 200-600 mg/week; oral: 50-100 mg/day
- How does Primobolan (methenolone) work?
- DHT derivative; mildly anabolic, non-aromatizing; oral acetate form (methenolone acetate) or injectable enanthate; historically used in premature infants and osteoporosis
This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.