Manufacturer: Spectrum Pharma Active Ingredient: Methenolone Enanthate Concentration: 100 mg/ml Volume: 10 ml vial Form: Injectable solution Purpose: Preserving muscle mass, raising strength, supporting athletic performance Action: Helps hold onto muscle mass, lifts strength and generally supports athletic output. Administration Route: Intramuscular injection Recommended Dosage: Typically 400-800 mg per week, as advised by a healthcare professional. Side Effects: Possible reactions include hair loss, shifts in libido, mood swings and suppression of the body’s own testosterone production. Storage: Keep in a cool, dry spot, away from direct sunlight and out of reach of children.
Primobolan 100mg Spectrum Pharma, USA Domestic
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Manufacturer: Spectrum Pharma
Active Ingredient: Methenolone Enanthate
Concentration: 100 mg/ml
Volume: 10 ml vial
Form: Injectable solution
Purpose: Muscle mass preservation, strength increase, improved athletic performance
Action: Supports preservation of lean muscle mass, raises strength output and improves overall athletic performance.
Administration Route: Intramuscular injections
Recommended Dosage: Typically 400-800 mg per week, as prescribed by a healthcare professional.
Side Effects: Possible side effects — hair loss, changes in libido, mood swings, and suppression of natural testosterone production.
Storage: Keep in a cool, dry place, away from direct sunlight and out of reach of children.
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Primobolan (Methenolone Enanthate) at 100 mg/ml — one of the gentler injectable anabolics, with a reputation for lean mass retention on calorie-restricted phases. Half-life of roughly five days supports twice-weekly pinning. Typical doses run 400–700 mg weekly across a ten-to-twelve-week cycle. Non-aromatising, mild in effect, well-suited to pre-contest and cutting work. Suppression still occurs despite the mild profile, so a proper SERM-based PCT remains standard. An expensive compound at effective doses — one for considered cycle planning rather than casual use.
| Active substance | Methenolone Enanthate (Primobolan) |
| Concentration | 100 mg per ml |
| Vial size | 10 ml multidose |
| Form | Oil-based IM injection |
| Manufacturer | Spectrum Pharma, USA Domestic |
| Half-life | Around 5 days |
| Weekly dose | 400–700 mg |
| Cycle length | 10–14 weeks, mainly for cutting |
| Storage | Below 25 °C in original packaging |
Primobolan — Methenolone Enanthate — at 100 mg/ml, Spectrum Pharma, USA domestic sourcing. The famously gentle long-ester cutting agent.
Weekly dosing lands at 400–700 mg, split across two injections. Primo doesn’t aromatise, barely stresses the liver and sits well with most users. The downside is cost — effective doses are high, which pushes the per-cycle price up. A refined choice when physique quality matters.
Frequently Asked Questions
What is Primobolan and how is it dosed?
Primobolan, or Methenolone Enanthate, is a mild long-ester anabolic favoured during cuts. Weekly doses sit at 400–700 mg across 8–12 weeks.
Does Primobolan (Methenolone Enanthate) aromatise to oestrogen?
No, Primobolan (Methenolone Enanthate) doesn’t aromatise to any meaningful degree, so an AI isn’t normally needed on its own.
What is Primobolan (Methenolone Enanthate) best known for?
A standard dose is 400 to 700 mg per week across ten to twelve weeks, injected once or twice weekly.
How soon do results from Primobolan appear?
Primobolan is often chosen for its gentle profile and mild aromatisation. It pairs neatly with testosterone during cutting runs of 10–12 weeks.
Can Primobolan be used by women?
Yes, Primobolan is often picked for female cycles thanks to its mild virilisation profile at low doses — around 50–100 mg weekly.








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