Methenolone is an anabolic androgenic steroid (AAS) that is commonly known by the brand names Primobolan (oral) and Primobolan Depot (injectable). It is derived from dihydrotestosterone (DHT) and is used to promote muscle growth, preserve lean mass, and enhance performance.

Key Characteristics:

Forms: Available in both oral (Methenolone Acetate) and injectable (Methenolone Enanthate) versions.

Anabolic-to-Androgenic Ratio: 88:44 (relatively mild compared to other AAS).

Half-Life:

Oral (Acetate): ~4-6 hours

Injectable (Enanthate): ~7-10 days

Detection Time:

Oral: Up to 4-5 weeks

Injectable: Up to 6 months

Liver Toxicity: Low (oral form has some hepatotoxicity, but less than other oral steroids).

Estrogenic Activity: None (does not convert to estrogen, reducing the risk of gynecomastia or water retention).

Androgenic Side Effects: Mild, but still possible (hair loss, acne, virilization in women).

Uses in Bodybuilding & Medicine:

Cutting Cycles: Helps preserve muscle while reducing body fat.

Bulking (Mild Gains): Not as strong as other steroids but provides lean, quality muscle gains.

Medical Use: Used in the past to treat muscle-wasting diseases and anemia.

Side Effects:

Cardiovascular: May lower HDL (good cholesterol) and increase LDL (bad cholesterol).

Hormonal: Suppresses natural testosterone production, requiring post-cycle therapy (PCT).

Hair Loss: Can accelerate male pattern baldness in those genetically predisposed.

Women (Virilization Risk): Deepening voice, facial hair growth, menstrual irregularities.

Typical Dosages:

Oral: 50-100 mg per day

Injectable: 300-600 mg per week

Women: 25-50 mg per week (injectable) or 10-25 mg per day (oral)

Legality & Availability:

Controlled Substance: In many countries, it is illegal without a prescription.

Availability: Often sourced from underground labs due to limited pharmaceutical production.

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