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NPP Powder Chemical Properties:
- Chemical Name: 19-nor-4-androsten-3-one-17β-ol phenylpropionate
- CAS Number: 62-90-8
- Molecular Formula: C27H34O3
- Molecular Weight: 406.56 g/mol
- Appearance: White or almost white crystalline powder
- Solubility: Soluble in alcohol, slightly soluble in vegetable oil, and practically insoluble in water
What is Nandrolone Phenylpropionate NPP Powder
Nandrolone Phenylpropionate NPP powder is an anabolic-androgenic steroid similar to Nandrolone Decanoate but with a shorter ester chain, leading to a quicker release into the bloodstream. It is commonly used both medically and in athletic contexts to promote muscle growth, enhance recovery, and improve joint health. Chemically known as 19-nor-4-androsten-3-one-17β-ol phenylpropionate, it is a white or almost white crystalline powder that is soluble in alcohol but practically insoluble in water.
Medically, NPP powder is used to treat various conditions, including anemia, osteoporosis, and muscle-wasting diseases like cachexia. It stimulates red blood cell production, increases bone density, and helps maintain muscle mass in patients suffering from chronic illnesses. These properties make it valuable in both therapeutic and performance-enhancement settings.
In bodybuilding, NPP is favored for promoting significant muscle growth and strength gains. It enhances collagen synthesis, which improves joint health and reduces pain, making it beneficial for athletes engaged in intense training. Additionally, NPP’s ability to increase red blood cell count enhances oxygen delivery to muscles, improving endurance and reducing fatigue during workouts.
Despite its benefits, NPP carries potential side effects. It can convert to estrogen in the body, leading to gynecomastia and water retention. It may also negatively impact cholesterol levels, increasing the risk of cardiovascular diseases. Androgenic side effects such as acne, hair loss, and increased body hair growth are also possible. Furthermore, NPP suppresses natural testosterone production, necessitating Post Cycle Therapy (PCT) to restore hormonal balance post-usage.
For bodybuilding purposes, typical NPP dosages range from 100 to 200 mg every other day, with cycles usually lasting 8-12 weeks. To manage potential side effects effectively, it is crucial to monitor liver function, lipid profiles, and hormonal levels regularly.

Nandrolone Phenylpropionate NPP Powder Certificate of Analysis
| Product Name |
Nandrolone phenylpropionate |
| Batch No. |
NPP20240718 |
Mfg. Date |
2024.7.18 |
| Analysis date |
2024.7.18 |
Exp Date |
2027.7.17 |
| Packing |
1kg/foil bag |
Quantity |
90kg |
| Ref. Standard |
USP34 |
| Test |
Specification |
Results of Analysis |
| Description |
White Or Practically White Crystalline Powder |
Almost White Crystalline Powder |
| Purity |
97.0~103.0% |
99.16% |
| Melting Point |
95℃~99℃ |
95.4℃~98.1℃ |
| Specific Rotation |
+48°~ +51° |
+50.0° |
| Identification |
A.B.C |
Conforms |
| Loss on drying |
≤0.5% |
0.20% |
| Residual Solvents |
Ethanol≤5000ppm |
23ppm |
| Acetonitrile≤410ppm |
Not Detected |
| Ethyl Acetate≤5000ppm |
Not Detected |
| Acetone≤5000ppm |
Not Detected |
| Methanol≤3000ppm |
Not Detected |
| Conclusion |
The specification conforms with USP34 |
| Q.C.Dept. Director: Zhang Hua |
Checker: Wu Ming |
Identifier: Han Zhen |
NPP Powder Benefits
① Joint Pain Relief and Increased Collagen Synthesis
NPP has the potential to provide joint pain relief and improve joint health. It has been reported to possess anti-inflammatory properties.
The NPP steroid also enhances collagen synthesis, improving joint flexibility, reducing pain, and improving overall integrity. It supports long-term training and minimizes the risk of injury.
② Enhanced Muscle Growth and Recovery
Durabolin stimulates protein synthesis, leading to an increase in muscle mass and size. It also helps retain nitrogen in the muscles.
Additionally, this steroid aids in the recovery process by reducing muscle fatigue and improving the repair of damaged tissues.
③ Improved Strength and Endurance
By increasing red blood cell production, NPP powder improves oxygen delivery to the muscles, delaying fatigue and enhancing stamina.
Moreover, it strengthens connective tissues, such as tendons and ligaments, reducing the risk of injuries associated with intense weightlifting exercises.
Nandrolone Phenylpropionate NPP Powder Side Effects
Nandrolone Phenylpropionate (NPP), like all anabolic steroids, comes with a range of potential side effects. These side effects can vary in severity depending on the dosage, duration of use, and individual response.
① Estrogenic Effects:
Gynecomastia: NPP can convert to estrogen in the body, leading to the development of breast tissue in men, known as gynecomastia.
Water Retention: Increased estrogen levels can cause water retention, resulting in bloating and elevated blood pressure.
② Cardiovascular Issues:
Cholesterol Levels: NPP can negatively impact cholesterol levels by lowering HDL (good cholesterol) and increasing LDL (bad cholesterol), raising the risk of cardiovascular diseases.
Blood Pressure: The water retention associated with estrogenic effects can also increase blood pressure.
③ Androgenic Effects:
Acne and Oily Skin: Increased androgenic activity can lead to acne and oily skin.
Hair Loss: Individuals predisposed to male pattern baldness may experience accelerated hair loss.
Increased Body Hair: Enhanced androgenic effects can cause increased body and facial hair growth.
④ Hormonal Imbalance:
Testosterone Suppression: NPP powder suppresses natural testosterone production, which can lead to symptoms such as reduced libido, fatigue, and potential testicular atrophy. Post Cycle Therapy (PCT) is often required to restore natural hormone levels after use.
⑤ Hepatotoxicity:
Liver Strain: Although less hepatotoxic than many other oral steroids, prolonged use or high doses of NPP can still strain the liver.
⑥ Psychological Effects:
Mood Changes: Users may experience mood swings, increased aggression, and irritability, often referred to as “roid rage.”
Anxiety and Depression: Some users may develop anxiety or depressive symptoms.
Nandrolone Phenylpropionate NPP Powder HNMR Report

How to Use Nandrolone Phenylpropionate NPP Powder
- Dosage: The typical dosage of Nandrolone Phenylpropionate ranges from 100mg to 400mg per week, depending on your goals and experience. Due to its fast-acting nature, NPP is usually administered more frequently, such as every other day or three times per week.
- Cycle Length: NPP cycles typically last between 8 and 12 weeks. This duration allows users to experience significant muscle growth and recovery benefits without long-term commitment.
- Stacking Options: NPP is often stacked with other anabolic steroids, such as Testosterone Propionate or Winstrol, to enhance muscle-building effects. Its ability to support joint health also makes it an excellent addition to cutting cycles where joint stress may be a concern.
NPP Powder Recipe
500ml Npp 100mg recipe
- 50g NPP powder (37.5ml)
- 15ml Benzyl Alcohol (3%)
- 75ml Benzyl Benzoate (15%)
- 372.5 ml Grapeseed oil
1000ml @250mg/ml NPP homebrew recipe
- 250g Npp steroid powder (187.5ml)
- 15ml Benzyl Alcohol (3%)
- 300ml Benzyl Benzoate (15%)
- 497.5ml Grapeseed oil
NPP Injection
The following semi-finished Nandrolone Phenylpropionate injection was made using our NPP powder and completed in our laboratory.

Nandrolone Phenylpropionate Dosage
Nandrolone Phenylpropionate NPP powder dosage varies depending on the user’s experience, goals, and whether it’s being used for medical or performance enhancement purposes. Below is the nandrolone phenylpropionate dosage for bodybuilding:
Beginner Cycle:
- Dosage: 100-200 mg every other day.
Cycle Length: Typically lasts 8-10 weeks.
Intermediate Cycle:
- Dosage: 200-300 mg every other day.
Cycle Length: Usually 8-12 weeks.
Advanced Cycle:
- Dosage: 300-400 mg every other day.
Cycle Length: Often 10-12 weeks.
Post Cycle Therapy (PCT):
After completing a cycle of NPP, it is essential to undergo PCT to help restore natural testosterone production and hormonal balance. Common PCT medications include Clomiphene (Clomid) and Tamoxifen (Nolvadex).
Monitoring:
- Monitoring liver function, lipid profiles, and hormone levels is crucial for detecting and managing potential side effects early.
- Health Checks: Liver function tests, lipid profiles, and hormonal panels are recommended before, during, and after the cycle.
NPP vs Deca
Nandrolone Phenylpropionate NPP powder and Deca Durabolin (Nandrolone Decanoate) powder are both anabolic steroids derived from nandrolone, but they differ in their ester chains, which affects their release and duration of action in the body. Here is a detailed comparison of the two:
| Property |
Nandrolone Phenylpropionate (NPP) |
Deca Durabolin (Nandrolone Decanoate) |
| Chemical Name |
19-nor-4-androsten-3-one-17β-ol phenylpropionate |
19-nor-4-androsten-3-one-17β-ol decanoate |
| CAS Number |
62-90-8 |
360-70-3 |
| Molecular Formula |
C27H34O3 |
C28H44O3 |
| Molecular Weight |
406.56 g/mol |
428.65 g/mol |
| Appearance |
The white or almost white crystalline powder |
The white or almost white crystalline powder |
| Half-Life |
Approximately 2-4 days |
Approximately 6-12 days |
| Injection Frequency |
Every other day |
Every 1-2 weeks |
| Primary Benefits |
Muscle growth, enhanced recovery, joint health, increased RBC count |
Muscle growth, improved bone density, longer action, increased RBC count |
| Estrogenic Effects |
Can convert to estrogen, causing gynecomastia and water retention |
Similar risks of gynecomastia and water retention |
| Cardiovascular Effects |
May impact cholesterol levels (lower HDL, higher LDL) |
Potential negative impact on cholesterol levels |
| Androgenic Effects |
Risk of acne, hair loss, increased body hair growth |
Similar risk of androgenic side effects |
| Hormonal Imbalance |
Suppresses natural testosterone production |
Suppresses natural testosterone production |
| Medical Uses |
Treatment of anemia, osteoporosis, muscle wasting diseases |
Treatment of anemia, osteoporosis, muscle wasting diseases |
| Sources |
WebMD, Healthline |
Drugs.com, MedlinePlus |
Nandrolone Phenylpropionate (NPP) and Deca Durabolin (Nandrolone Decanoate) are used for muscle growth, recovery enhancement, and joint health. The primary difference between the two lies in their ester chains, which affect the frequency of injections and the onset of action. NPP has a shorter half-life and requires more frequent injections, while Deca Durabolin has a longer one and fewer frequent injections. Both have similar benefits and side effects, including potential estrogenic, cardiovascular, androgenic, and hormonal impacts.
Why Choose AASPHARM for Nandrolone Phenylpropionate NPP Powder?
- Lab-Tested for Quality and Safety: Each batch of our pure Nandrolone Phenylpropionate powder undergoes rigorous testing to ensure 99%+ purity and compliance with industry standards. This guarantees a high-quality product that meets your performance needs.
- Bulk Pricing & Fast Shipping: We offer competitive bulk pricing for all orders, whether small or large. Additionally, we provide fast and discreet shipping to ensure your order arrives securely and on time.
- Trusted Supplier: AASPHARM is a reliable supplier of high-quality anabolic steroid powders. Our commitment to excellence in product quality, customer satisfaction, and reliable service makes us a preferred choice for athletes, bodybuilders, and fitness professionals.
Nandrolone Phenylpropionate for Sale
Customer Satisfaction Guarantee
At AASPHARM, we are confident in the quality of our Nandrolone Phenylpropionate powder. If you are not fully satisfied with your purchase, we offer a money-back guarantee. Additionally, we provide free reshipping if your order is seized or does not arrive. Our customer support team is available 24/7 to assist with any questions or concerns.
Order Your Pure Nandrolone Phenylpropionate NPP Powder Today
Maximize your muscle growth, strength, and recovery with our lab-tested, high-purity Nandrolone Phenylpropionate powder. AASPHARM offers competitive bulk pricing, fast shipping, and exceptional service to ensure you receive the highest quality product for your needs. Order now and experience the benefits of NPP powder for yourself!
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