“Nandrolone-P 100 mg” is a common label for an injectable preparation of the anabolic steroid Nandrolone Phenylpropionate (NPP), with a standard concentration of 100 mg per mL .
Here is a summary of its medical uses, dosing, and risks.
Approved Medical Uses
Nandrolone phenylpropionate is a prescription medication used to treat specific conditions where tissue-building (anabolic) effects are beneficial :
-
Palliative treatment of advanced breast cancer in women .
-
Osteoporosis (to improve bone mineral density) .
-
Anemia associated with chronic illness or renal failure .
-
Catabolic states (to prevent muscle wasting from severe burns, trauma, major surgery, or chronic infections) .
Medical Dosage
The dosage and frequency vary by condition. It is administered as a deep intramuscular (IM) injection .
| Indication | Typical Medical Dosage |
|---|---|
| Metastatic Breast Cancer (Women) | 50 – 100 mg once per week |
| Anemia (Chronic Renal Failure) | 50 – 100 mg once per week (up to 200 mg for males) |
| Catabolic/Wasting Conditions | 25 – 100 mg every 1-2 weeks |
| Postmenopausal Osteoporosis | 25 – 50 mg every 2-3 weeks |
Doses are adjusted based on response and clinical condition, with a treatment course for breast cancer generally lasting up to 12 weeks .
Critical Safety Information and Risks
Nandrolone phenylpropionate carries significant health risks that are well-documented in safety data and prescribing information:
-
Carcinogenicity & Reproductive Toxicity: The substance is classified as containing a known or suspected carcinogen and a known or suspected reproductive toxin. It may damage fertility, harm an unborn child, or cause harm to breast-fed children .
-
Endocrine Disruption: It is a known endocrine disruptor that can cause serious hormonal imbalances .
-
Virilization in Women: Women are at risk of irreversible masculinizing effects, including deepening of the voice, hirsutism (increased body hair), and clitoral enlargement .
-
Hormonal Suppression in Men: In men, it suppresses natural testosterone production, which can lead to reduced sperm count, impotence (sometimes called “Deca-Dick”), and decreased libido .
-
Other Side Effects: Additional risks include water and salt retention (which can affect blood pressure and heart failure), liver enzyme changes, nausea, and acne .
Unapproved Use Context
In bodybuilding communities, NPP is misused for its muscle-building properties. In this unapproved context, common practices may involve significantly higher weekly doses (e.g., 200-600 mg for men), split into more frequent injections due to its short half-life, and are almost always combined with testosterone .




Reviews
There are no reviews yet.