Nandrolone Decanoate
Deca-Durabolin — long-ester nandrolone. Joint-comfort reputation, slow build, slow clear.
- Half-life
- 6.0 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 Nandrolone Decanoate is used for
- Strong size + strength gains with a reputation for joint comfort
- Long ester — once-weekly injection
- Lower androgenic side effects on skin/hair than testosterone
How it's typically used
Literature range: 200–400 mg intramuscular weekly, run alongside a testosterone base.
What to watch for
- Notorious for sexual side effects ("deca dick") via prolactin/low DHT
- Heavily suppressive with a long, slow recovery; PCT is mandatory
- Controlled substance; long detection window. Bloodwork essential
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 Decanoate: A Tracking Guide and Risk Overview
A long-ester 19-nortestosterone with a real medical history and serious suppression. What to monitor, including the things people miss.
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.