Nandrolone Phenylpropionate
NPP — short-ester nandrolone. Same compound as Deca, faster on and off.
- Half-life
- 2.7 d
- Out of system
- ~14 days
- Route
- Intramuscular
- Level
- Advanced
Levels carry over between doses — every 2–3 days is typical. After the last dose, roughly 97% has cleared in ~14 days (five half-lives) — the window that matters for washouts, bloodwork and surgery.
What Nandrolone Phenylpropionate is used for
- Same nandrolone profile as Deca with a short ester
- Faster to clear, easier to adjust or stop
How it's typically used
Literature range: ~100 mg intramuscular every other day, alongside testosterone.
What to watch for
- Frequent injections (every other day)
- Same prolactin/sexual side effects and heavy suppression as Deca
- Controlled substance; run with a testosterone base and plan a PCT
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
Nandrolone Phenylpropionate: A Tracking Guide for the Short-Ester Nandrolone
NPP is nandrolone on a faster ester. Same compound, same risks, more frequent injections. What to track.
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.