Nandrabolin
Active Substance: Nandrabolin
Description
Nandrolone, often known by the brand names Deca-Durabolin and Durabolin, is a synthetic anabolic-androgenic steroid (AAS) that is chemically related to testosterone. Its chemical name is 19-nortestosterone. It is used in medicine to treat various conditions, including anemia associated with chronic kidney failure, osteoporosis in postmenopausal women, and certain types of breast cancer. It is also used to help build tissue in individuals with muscle wasting conditions like those seen in AIDS patients.
Side Effects and Benefits
As with all anabolic steroids, nandrolone has both potential benefits and risks.
Benefits:
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Anabolic Effects: Nandrolone is known for its strong anabolic properties, which promote muscle growth, appetite stimulation, and increased red blood cell production.
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Bone Health: It can increase bone density and is used to treat osteoporosis.
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Joint Pain Relief: Some studies suggest it can help relieve joint pain.
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Tissue Building: It is effective in treating wasting syndromes and helping patients in catabolic states (e.g., those with severe burns or cancer) to build and retain muscle mass.
Side Effects:
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Androgenic Side Effects: While nandrolone is considered to have weak androgenic effects compared to testosterone, it can still cause masculinization, especially in women and children. This may include acne, increased hair growth (hirsutism), deepening of the voice (which can be irreversible), and clitoral enlargement.
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Cardiovascular: It can lead to a decrease in HDL (high-density lipoprotein) cholesterol, which is considered "good" cholesterol, and an increase in blood lipids. It can also cause fluid retention and may be risky for people with heart, kidney, or liver disease.
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Hepatotoxicity: Although less hepatotoxic than some other oral steroids, high doses and prolonged use can still lead to liver problems like peliosis hepatis (a condition of blood-filled cysts in the liver) and hepatic tumors.
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Endocrine System: It can suppress natural testosterone production and spermatogenesis (sperm production) in men. In women, it can cause menstrual irregularities or amenorrhea (absence of menstruation).
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Psychological: Long-term, high-dose use can be associated with mental disturbances, including aggressive behavior and insomnia.
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Growth: In children, it can cause premature closure of the epiphyseal growth plates, leading to stunted growth.
Pros and Cons
Pros:
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High Anabolic-to-Androgenic Ratio: This is a key feature of nandrolone. It means it has a higher capacity for building muscle and tissue with fewer of the masculinizing side effects typically associated with androgens.
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Therapeutic Applications: It has proven medical uses for serious health conditions.
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Joint Benefits: It is one of the few steroids that may offer a benefit for joint pain and healing.
Cons:
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Side Effects: Despite its favorable ratio, it is not free of side effects, especially with long-term or high-dose use.
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Legal Status: Non-medical use is illegal and a controlled substance in many countries.
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Suppression of Natural Hormones: It can significantly suppress the body's natural production of testosterone and other hormones.
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Detection Time: Its long detection time makes it a poor choice for athletes subject to drug testing.
Dosage and Frequency
Dosage and frequency vary widely depending on the medical condition being treated and the specific ester form (e.g., nandrolone decanoate or nandrolone phenylpropionate). For medical purposes, dosages are typically low and administered by deep intramuscular injection. For example:
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Anemia: 50 to 200 mg per week.
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Osteoporosis: 50 mg every 2-3 weeks.
For performance-enhancing purposes, doses are often much higher, and the frequency may be different. Note: These are only examples and not a recommendation for use. Any use should be strictly supervised by a healthcare professional.
Half-Life and Detection Time
The half-life and detection time of nandrolone depend on the specific ester. Nandrolone decanoate, for instance, is a long-acting ester.
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Half-Life: The terminal half-life of nandrolone decanoate is approximately 7-12 days. The initial release from the injection site is slower, with a half-life of about 6 days.
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Detection Time: Due to its long-lasting nature and the formation of long-lived metabolites, nandrolone has a very long detection time. Nandrolone metabolites can be detected in urine for an extended period, ranging from 33 days to up to 18 months or more, depending on the dose, frequency of use, and individual metabolism. This is one of the longest detection times of any anabolic steroid.
Sterogenic, Progestronic, and Prolactin Effects
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Sterogenic: This term is not a standard pharmacological classification. The correct term is steroidogenic, which refers to the production of steroid hormones. Nandrolone itself is a synthetic steroid hormone, not a stimulator of steroidogenesis.
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Progestronic: Nandrolone is a progestin, meaning it has the ability to bind to the progesterone receptor. This is a significant characteristic of nandrolone and contributes to some of its side effects. Progestin activity can lead to a decrease in libido and, in some cases, can increase the risk of developing gynecomastia (breast tissue development in males), especially when combined with high estrogen levels.
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Prolactin: The progestogenic nature of nandrolone can lead to an increase in prolactin levels. Elevated prolactin, known as hyperprolactinemia, can cause side effects such as galactorrhea (lactation in males or non-pregnant females), sexual dysfunction (including erectile dysfunction), and suppressed fertility. This is often a concern for users of nandrolone, and managing prolactin levels is a critical consideration.
Anabolic-Androgenic Ratio
The anabolic-androgenic ratio is a measure of a steroid's ability to promote tissue growth (anabolic effect) versus its ability to produce male characteristics (androgenic effect). This is a crucial metric for evaluating a steroid's profile.
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Nandrolone's anabolic-androgenic ratio is approximately 10:1.
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In comparison, testosterone's ratio is considered to be 1:1.
This high ratio is why nandrolone is so effective at building muscle mass with relatively fewer of the classic androgenic side effects like male pattern baldness or prostate enlargement. However, this does not mean it is without androgenic effects, as higher doses can still cause significant virilization.
Pharmacological Properties
Half Life
12 days
Active Dose
57%
Detection
8.57 weeks
Concentration
250 mg/ml
Anabolic/Androgenic Profile
Usage Effectiveness
Activity Profile
Estrogenic
None
Progestanic
None
Water Retention
None
Aromatization
No
Benefits
Dosage Recommendations
Beginner
200-400 mg/week
Intermediate
400-600 mg/week
Advanced
600-800 mg/week
Evidence-based planning resources
Dive deeper into Nandrabolin cycle design, stacking options, and harm-reduction checklists available inside Anabolic Planner.
- Nandrabolin compound database overviewCompare Nandrabolin with other steroid agents in the structured compound index.
- Nandrabolin stack and cycle templatesReview evidence-based cycle outlines, dose progressions, and PCT pairings that incorporate Nandrabolin.
- Harm-reduction guide for NandrabolinRefresh safety monitoring, lab work, and countermeasure strategies tailored for Nandrabolin protocols.
Peer-reviewed reference material
Validate mechanisms, contraindications, and regulatory guidance for Nandrabolin with trusted clinical databases.
- Nandrabolin clinical research on PubMedSearch peer-reviewed human and veterinary studies discussing efficacy, endocrine impact, and contraindications.
- Nandrabolin pharmacology via Drug Information PortalReview mechanisms, synonyms, regulatory status, and toxicology summaries from the U.S. National Library of Medicine.
Side Effects
Common
Severe
Safety Information
Liver Toxicity
None
Kidney Toxicity
Low
Cardiovascular Risk
Moderate
Disclaimer: This information is for educational purposes only. Always consult with a qualified healthcare professional before using any compounds.