What is Deca?
Deca (Nandrolone Decanoate) is one of the oldest and best-known anabolics - a 19-nor steroid with a long decanoate ester. It builds slowly and comparatively mildly, is known for the reputation of making joints feel "smoother", and was used clinically for muscle wasting, anemia and osteoporosis.
This information is for research and educational purposes only. No medical advice.
How it works
Nandrolone activates the androgen receptor, aromatizes only weakly (less estrogen than testosterone), but - like all 19-nor compounds - has progesterone activity. That is the reason for the prolactin-related nickname "deca dick" (libido/erection issues) when prolactin is not controlled.
Use and dosing
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What the research shows
Nandrolone decanoate has an unusually good clinical data base compared to other anabolics. The Johansen study (JAMA, 1999) showed a significant gain in fat-free mass on nandrolone vs placebo in dialysis patients. The AAS pharmacology is summarized in Kicman (2008).
Side effects
- Prolactin: "deca dick" - libido/erection issues, cabergoline as countermeasure.
- HPTA suppression: strong and long-acting - longer PCT needed.
- Estrogen: weak aromatization, an AI may still be needed.
- Water retention, blood pressure.
Storage
Store the oil solution at room temperature, protected from light - no fridge needed. Out of reach of children.