Description
Core Labs NPP (Nandrolone Phenylpropionate) is the fast-acting version of Nandrolone (commonly known as Deca), used in performance research for joint support, lean muscle gain, and enhanced recovery. It’s favored by those wanting the benefits of Deca without the long ester (Decanoate) and with quicker clearance.
Key Facts:
● Full name: Nandrolone Phenylpropionate
● Half-life: ~2–4 days
● Injection frequency: Every other day (EOD)
● Anabolic:Androgenic Ratio: ~125:37
● Mild aromatization (converts to estrogen slowly)
● Also progestogenic (can impact libido and gyno sensitivity)
Benefits (in research settings):
● Lean muscle growth (slower, cleaner gains than testosterone)
● Excellent joint support (often helps joint pain)
● Increased collagen synthesis & bone density
● Improved nitrogen retention and recovery
● Low estrogenic bloat compared to testosterone




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