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Nandrolone Phenylpropionate (NPP) is a synthetic anabolic-androgenic steroid (AAS). It is an ester of nandrolone, known for its relatively fast action compared to other forms. Due to its chemical structure, which includes a shorter phenylpropionate ester, NPP is absorbed and eliminated from the body more quickly than longer-acting nandrolone esters like nandrolone decanoate (Deca-Durabolin). This typically means it requires more frequent administration to maintain consistent levels in the body.
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