top of page

Nandrolone Phenylpropionate (NPP) is an injectable anabolic/androgenic steroid, characterized by its high anabolic and mild androgenic properties. It closely resembles the popular steroid Deca, which contains nandrolone with a longer ester (decanoate). In practical terms, Nandrolone Phenylpropionate serves as a shorter-acting alternative to Deca.

Anecdotal evidence suggests that NPP may induce less water retention compared to its longer-acting counterpart, akin to shorter esters of injectable testosterones, which tend to cause less water retention. Additionally, NPP is associated with a higher incidence of side effects compared to Nandrolone Decanoate, particularly in relation to reducing the occurrence of 'Deca Dick,' and it imparts a cleaner, more defined appearance to the muscles than Deca.

It's important to note that due to its chemical structure, NPP is prone to crystallization if exposed to temperatures below 6°C (48.8°F) for an extended period. Storage conditions must be maintained within the range of 6°C to 30°C as indicated on the vial label. Customers residing in colder climates should be aware that the product may arrive in a crystallized state. Instructions on how to recover re-crystallized product can be found in our forums.

Packaging: Single vial with silicone stopper, containing 10ml of product.

Dosage & administration:

Half life

3 days

Adult dose (Male)

200-600mg EOD or ETD by intramuscular injection

Adult dose (Female)

25-50mg EOD or ETD by intramuscular injection

Average Cycle Length

4-12weeks following an EOD, ETD injection pattern

Anabolic #


Androgenic #



Estimated at 100%

CAS Name


NPP nandrolone-phenylpropionate 200mg

    bottom of page