Deca or npp
Deca, or Nandrolone Decanoate, is a popular anabolic-androgenic steroid noted for muscle-building and joint relief properties. NPP is its short-ester variant offering faster body clearance. Originally for treating anemia, both enhance protein synthesis and red blood cell production. Such benefits make Deca favored among bodybuilders, despite risks like cardiovascular issues and hormonal imbalances. Users are advised to follow post-cycle therapy to mitigate side effects, as Deca is a controlled substance in many places.

