What is Nandrolone Decanoate?
Nandrolone Decanoate injectable (commonly branded as Deca-Durabolin or generics, also known as “Deca”) is a pharmaceutical oil-based solution for intramuscular use. It is a synthetic anabolic-androgenic steroid (AAS) derived from testosterone by removal of the 19-methyl group (19-nortestosterone) and esterified with decanoic acid for prolonged release.
The decanoate ester slows absorption from the injection site, providing a sustained release of nandrolone with an absorption half-life of ~6 days and elimination half-life of nandrolone ~4.3 hours (though overall duration of action is 2–3 weeks per dose due to flip-flop pharmacokinetics). This allows dosing every 1–4 weeks in medical settings (commonly every 2–4 weeks). Nandrolone exerts strong anabolic effects (increased protein synthesis, nitrogen retention, collagen production, erythropoiesis) with relatively low androgenic activity (anabolic:androgenic ratio often 3–5:1 or higher vs. testosterone).
Research Applications
- Anemia management in chronic kidney disease (erythropoiesis stimulation)
- Adjunct therapy for postmenopausal/senile osteoporosis (bone density/collagen)
- Cachexia/wasting syndromes (e.g., HIV, cancer, burns)
- Comparative AAS studies (anabolic/androgenic ratios, joint/tendon effects, progestogenic activity)
- Endocrine suppression, metabolite profiling, recovery protocols
- Pharmacokinetics of long-ester nandrolone vs. other AAS
Quick Product Specs
- Form: Injectable Solution (sterile, oil-based; clear, pale yellow to yellow viscous oily liquid)
- CAS Number: 360-70-3
- Chemical Name: 19-Nortestosterone 17β-decanoate (or Estr-4-en-3-one, 17-[(1-oxodecyl)oxy]-, (17β)-)
- Storage: Controlled room temperature 20–25°C (68–77°F); excursions permitted 15–30°C (59–86°F); protect from light; do not refrigerate (can cause precipitation, crystallization, or cloudiness—warm gently to redissolve if needed)
- Shelf Life: Typically 24–36 months unopened from manufacture date (pharmaceutical or compounded vials); multi-dose vials discard 28 days after first puncture for sterility (follow USP/manufacturer guidelines)
- Type: Long-acting injectable androgen/anabolic steroid (AAS); nandrolone (19-nortestosterone) ester; deep intramuscular injection (gluteal or vastus lateralis preferred)
