Anadur
Active Substance: Anadur
Description
What is Anadur?
Anadur, also known by its scientific name nandrolone hexyloxyphenylpropionate (NHPP), is a synthetic anabolic-androgenic steroid (AAS) and a nandrolone ester. It is a derivative of testosterone, but with a modified chemical structure that enhances its anabolic properties while reducing its androgenic effects.
Other names for Anadur include:
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Nandrolone hexyloxyphenylpropionate (NHPP)
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Anador
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Anadurine
Side Effects and Benefits
Like all anabolic steroids, Anadur has both potential benefits and serious side effects. Medically, it has been studied as a long-acting injectable male contraceptive and for conditions like anemia and osteoporosis.
Potential Benefits (often associated with misuse):
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Anabolic effects: Anadur promotes tissue growth, leading to increased muscle mass and strength.
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Red blood cell production: It can stimulate the production of red blood cells, which may improve oxygen delivery and endurance.
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Bone density: It can increase bone density, which is why it has been investigated for conditions like osteoporosis.
Potential Side Effects:
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Androgenic side effects: These are the effects related to male sex characteristics and can include acne, male-pattern baldness, and increased body and facial hair. In women, these effects can be irreversible, leading to a deepened voice, clitoral enlargement, and changes in the menstrual cycle.
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Cardiovascular effects: Anadur can negatively impact cholesterol levels by increasing "bad" LDL cholesterol and decreasing "good" HDL cholesterol, which can increase the risk of heart disease, heart attack, and stroke.
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Liver toxicity: While generally less liver toxic than oral steroids, injectable steroids can still cause liver strain, especially with long-term use.
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Hormonal imbalance: Anadur can suppress the body's natural production of testosterone, leading to hypogonadism, low libido, and infertility in men.
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Psychological effects: Users may experience mood swings, irritability, and aggression, sometimes referred to as "roid rage."
Pros and Cons
Pros (based on its properties):
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High anabolic-to-androgenic ratio, which means it promotes muscle growth more than it causes masculinizing effects.
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Long half-life, which allows for less frequent injections.
Cons (related to its nature as an anabolic steroid):
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Illegal for non-prescribed use and banned in sports.
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Serious and potentially irreversible side effects, particularly for women.
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Suppression of natural testosterone production.
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Potential for liver and cardiovascular problems.
Dosage and Frequency
Information on specific dosages and frequencies for Anadur for non-medical purposes is not officially published and would be highly dependent on the user's goals, experience, and tolerance. However, based on the nature of long-acting nandrolone esters, injections are typically infrequent. In a clinical study for male contraception, a single intramuscular injection of 50 mg of nandrolone hexyloxyphenylpropionate was administered. Any specific dosage and frequency would be considered a form of drug abuse and is not recommended.
Half-Life and Detection Time
Anadur is a long-acting steroid due to its esterification.
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Elimination Half-Life: The elimination half-life of Anadur is approximately 20.1 days. This means it takes about 20 days for half of the drug to be eliminated from the body.
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Detection Time: Due to its long half-life, Anadur has a very long detection time in drug tests. Similar to other long-acting nandrolone esters like nandrolone decanoate (Deca-Durabolin), it can be detected in the urine for months, with some sources citing a detection window of 3-6 months or even longer.
Sterogenic, Progestronic, and Prolactin Effects
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Estrogenic effects: Nandrolone, the base compound of Anadur, can aromatize (convert to estrogen), but to a lesser degree than testosterone. This means that at typical doses, estrogenic side effects like water retention and gynecomastia are less common, but still possible.
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Progestronic effects: Nandrolone is a progestin, meaning it can directly activate progesterone receptors. This is a significant characteristic of nandrolone and can contribute to some side effects.
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Prolactin effects: The progestronic activity of nandrolone can lead to an increase in prolactin levels (hyperprolactinemia). Elevated prolactin can cause side effects such as gynecomastia (often referred to as "deca-dick" when combined with erectile dysfunction), lactation in men (galactorrhea), and sexual dysfunction. The risk of these side effects is increased when Anadur is used alongside other aromatizing steroids.
Anabolic-Androgenic Ratio
The anabolic-androgenic ratio (AAR) is a measure of a steroid's ability to build muscle tissue (anabolic effect) versus its ability to cause masculinizing side effects (androgenic effect).
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Anadur (Nandrolone): Nandrolone is known for having a very favorable anabolic-to-androgenic ratio. While testosterone has an AAR of 1:1, nandrolone's ratio is often cited as being much higher, with some sources claiming it to be around 11:1. This is because nandrolone is not significantly affected by the 5-alpha reductase enzyme in muscle tissue, which would convert it to a more androgenic compound. In fact, in androgenic tissues like the prostate, nandrolone is converted to a less potent androgen, which contributes to its lower androgenic rating.
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 Anadur cycle design, stacking options, and harm-reduction checklists available inside Anabolic Planner.
- Anadur compound database overviewCompare Anadur with other steroid agents in the structured compound index.
- Anadur stack and cycle templatesReview evidence-based cycle outlines, dose progressions, and PCT pairings that incorporate Anadur.
- Harm-reduction guide for AnadurRefresh safety monitoring, lab work, and countermeasure strategies tailored for Anadur protocols.
Peer-reviewed reference material
Validate mechanisms, contraindications, and regulatory guidance for Anadur with trusted clinical databases.
- Anadur clinical research on PubMedSearch peer-reviewed human and veterinary studies discussing efficacy, endocrine impact, and contraindications.
- Anadur pharmacology via Drug Information PortalReview mechanisms, synonyms, regulatory status, and toxicology summaries from the U.S. National Library of Medicine.
Side Effects
Common
Rare
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.