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What is Nandrolone Phenylpropionate (NPP)?
Nandrolone Phenylpropionate-NPP is an anabolic steroid derived from 19-nortestosterone, known for its effectiveness in increasing muscle mass and reducing androgenic side effects compared to testosterone. Structurally similar to progestogens, NPP has low androgenic activity, reducing the risk of acne, baldness, and excessive body hair growth. Unlike testosterone, it is converted to dihydronandrolone, a very weak androgen, making it safer for men with prostate problems.

Main benefits of Nandrolone Phenylpropionate-NPP

• Significant muscle growth: up to 8 kg in one cycle, with minimal reduction.

• Joint and bone support: promotes collagen synthesis, improves joint lubrication, and reduces joint pain.

• Resistance and oxygenation: increased production of red blood cells, improving oxygen transport and physical endurance.

• Reduced estrogenic effects: low risk of gynecomastia and water retention even at high doses.

• Nutrient absorption: optimizes the assimilation of amino acids and essential nutrients.

Side Effects Despite its low androgenicity, Nandrolone Phenylpropionate-NPP can interact with progestin receptors, increasing prolactin production and reducing endogenous testosterone production. Possible side effects include: increased blood pressure, slight changes in body fat, rare cases of gynecomastia, headaches, irritability, and depression.

Recommended dosages

• Medical use (joint pain, osteoporosis): 50–150 mg per week for 5–10 weeks.

• Muscle mass increase: 200-800 mg per week; average dosage 400 mg, often combined with 500 mg of testosterone to improve results and reduce progestogenic effects.

Profile and administration

• Half-life: 2–4 days

• Frequency of injections: twice a week

• Pharmaceutical form: Oily solution for intramuscular injection
  The typical cycle lasts 8-10 weeks, but can be up to 6 months for advanced athletes. It is recommended to combine NPP with testosterone and, in long cycles, to use hCG before PCT.

contraindications Pregnancy, breastfeeding, known or suspected prostate or breast cancer, hypersensitivity to the active ingredient, high blood calcium levels.

Storage
Store in a cool, dry place away from direct sunlight at room temperature. Keep out of reach of children. Do not use after the expiration date.