NPP

What is NPP (Nandrolone Phenylpropionate) by SYN Pharma?

NPP, or Nandrolone Phenylpropionate, is a fast-acting injectable anabolic steroid known for its ability to build quality lean mass, increase strength, and promote joint health. It is a shorter-estered version of Deca-Durabolin (Nandrolone Decanoate), offering faster onset and easier control over hormone levels.

SYN Pharma’s NPP is formulated at 100 mg/ml in a 10 ml vial, delivering 1000 mg total. It is favored by athletes looking for the benefits of Nandrolone with less water retention and quicker clearance after cycle completion.

Benefits of NPP

• Promotes lean muscle growth and recovery
• Supports joint lubrication and pain relief
• Lower risk of water retention compared to Deca
• Faster onset and clearance for shorter, more controlled cycles

Product Details

• Compound: Nandrolone Phenylpropionate
• Concentration: 100 mg/ml
• Volume: 10 ml per vial
• Total Content: 1000 mg per bottle
• Injection Frequency: Every other day (EOD) recommended

Dosage and Administration

Typical dosing for NPP ranges from 300 to 500 mg per week, split into EOD injections. Due to its short ester, it begins acting quickly and clears the body faster than Deca, making it ideal for 6 to 10-week cycles. NPP is often stacked with Testosterone Propionate or Enanthate to maintain hormonal balance and libido.

8-Week NPP Lean Mass Cycle Example

Common Questions About NPP

How is NPP different from Deca-Durabolin?

NPP has a shorter ester, which means faster onset, shorter half-life, and less water retention. It requires more frequent injections but offers quicker recovery post-cycle.

Is post-cycle therapy required?

Yes. Like all anabolic steroids, NPP suppresses natural testosterone. A full PCT with Nolvadex, Clomid, or HCG should begin about 4–5 days after the last injection.

Does NPP cause estrogen-related side effects?

Nandrolone does not aromatize heavily, but it can raise progesterone levels, which may lead to gynecomastia in sensitive users. Cabergoline or Prami may be used to manage prolactin, and an AI is recommended if testosterone is stacked.

Can NPP be used for cutting?

Yes. While often used in lean bulking, NPP can also support muscle retention and joint health in cutting cycles, especially when paired with dry compounds like Winstrol or Masteron.