Methenolone Enanthate (Primobolan)
Primobolan — a milder DHT-derived anabolic with a low-side-effect reputation. Still suppressive.
- Half-life
- 5.0 d
- Out of system
- ~4 weeks
- Route
- Intramuscular
- Level
- Advanced
Long-acting — weekly dosing keeps levels steady. After the last dose, roughly 97% has cleared in ~4 weeks (five half-lives) — the window that matters for washouts, bloodwork and surgery.
What Methenolone Enanthate (Primobolan) is used for
- Mild DHT-derived anabolic — low water retention, so gains read as lean tissue
- Does not aromatise, so oestrogenic side effects (gyno, bloat) are not a factor
- Long-standing reputation for being tolerable at moderate doses relative to stronger androgens
How it's typically used
Research range: 300–600 mg intramuscular per week, split into two shots, over 8–12 weeks. Almost always run alongside a testosterone base rather than alone.
What to watch for
- Still fully suppressive — natural testosterone shuts down and needs an exit plan (PCT or ongoing replacement)
- Its mild reputation drives long runs at high doses, which is where the lipid and haematocrit damage happens
- Blunts HDL and can raise haematocrit; bloodwork before, during, and after is the minimum
- A controlled substance in most countries and heavily counterfeited — Primobolan is one of the most faked compounds on the market
About Androgens & steroids
- What they are
- Anabolic-androgenic steroids — testosterone and its derivatives. These are drugs, not peptides, and are controlled substances in most countries.
- How they're run
- Injected intramuscularly or subcutaneously on a schedule set by the ester's half-life; a few are oral and hepatotoxic.
- What to watch
- Every one of these shuts down your own testosterone production. Full bloodwork before, during, and after is not optional, and an exit plan — PCT or ongoing replacement — is part of the decision to start, not an afterthought.
Full guide
Methenolone Enanthate (Primobolan): A Tracking Guide for a "Mild" Anabolic
Often called gentle, but still suppressive and not risk-free. What "mild" actually means and what to monitor.
Other androgens & steroids
Peptid AI is an educational and self-tracking tool — not a medical service, and not a vendor. Nothing here is medical advice, a prescription, or an endorsement. Doses reflect what is commonly reported in research literature; they are not recommendations. Many compounds listed are experimental, not approved for human use, and/or controlled substances that are illegal to possess without a prescription in many countries. Always consult a qualified physician before starting, changing, or stopping any protocol.