Description

Technical Parameters

Introduction

Oxymetholone Anadrol2

musclepic 2

Products Description

Part 1 Classification: Classification by usage and quality

From the perspective of raw material powder and application, oxymetholone can be divided into several categories:

1. Pharmaceutical/USP grade

Raw materials that meet pharmacopoeial and regulatory standards are used to prepare prescription oral dosage forms and must meet strict purity, impurity and residual solvent limits and are used for clinically approved indications (such as certain types of anemia). Such raw materials are produced by regulated pharmaceutical factories and must have complete quality management and batch release documents. ([go.drugbank.com][2])

2. Research/Chemical grade

Mainly used for scientific research purposes such as pharmacology, toxicology, formulation or analytical method development. Purity and impurity control are inferior to pharmaceutical grade, but generally still maintain a high purity and are accompanied by a certificate of analysis (CoA).

3. Veterinary/Industrial grade

Relatively loose purity and impurity standards, specifically for non-human use or the veterinary market in certain countries/regions, and sometimes clearly distinguished from pharmaceutical grade in terms of regulation.

4. Illicit/Black-market

A common source in the fitness community, with variable quality and a high risk of adulteration, inaccurate concentrations, or contamination. Non-prescription and informal purchase and use are illegal or regulated in many jurisdictions. ([Wikipedia][1])

Part 2 Molecular and physicochemical properties (key parameters)

* Chemical name and structure key points: Common name oxymetholone, IUPAC and systematic names reflect that it is a 17α-alkylated (17α-methyl) and 2-hydroxymethylene substituted DHT derivative, belonging to the androstane class of synthetic steroids. ([Wikipedia][1])

* Molecular formula and molecular weight: C21H32O3, molecular weight approximately 332.48. ([NIST WebBook][3])

* CAS Registry Number: 434-07-1. ([Wikipedia][1])

* Melting point: The values reported in the literature and databases correspond approximately to the high temperature range (approximately 352–356°F in Fahrenheit; the range reported in the conversion is approximately 177–180°C and is related to the measurement). Different data sources may have different measurement conditions. Common standard physical and chemical databases can be used as a reference. ([PubChem][4])

* Appearance and color: It usually exists in the form of white to milky white or light cream crystalline powder (described as white-to-creamy crystals in solid form). The powder should be fine and free of obvious impurity particles. ([National Center for Biotechnology Information][5])

* Solubility and stability: Almost insoluble in water, easily soluble in organic solvents such as ethanol, dioxane, ethers and chloroform, light-sensitive and may degrade in humid, high-temperature or strong acidic and alkaline environments; storage under vacuum and light-proof conditions can prolong stability. ([National Center for Biotechnology Information][5])

Part 3 "Advantages" and mechanism of action in fitness/body transformation (objective description)

Note: The following "advantages" are pharmacological/effect descriptions summarized from literature and user reports, and are not equivalent to safety recommendations or usage suggestions.

1. Strong weight/strength-enhancing effect

Oxymetholone is known for its significant anabolic effect, which can lead to rapid weight gain (including increases in muscle mass and water/glycogen) in a relatively short period of time. Therefore, it is often mentioned in situations where rapid weight loss or short-term weight gain is required. ([Wikipedia][1])

2. Promote erythropoiesis and improve anemia indicators

As one of the early therapeutic indications, oxymetholone can stimulate erythropoiesis (indirect enhancement of the EPO pathway or bone marrow stimulation), showing therapeutic value in certain types of anemia. This feature is also used by the fitness community to explain part of its ability to improve training endurance and recovery. ([PubMed][6])

3. Promote protein synthesis and anti-decomposition effects

Like most anabolic steroids, oxymetholone can improve nitrogen retention, enhance protein synthesis and inhibit muscle breakdown, helping to achieve weight and strength gains when energy is sufficient or short-term excess. ([Wikipedia][1])

However, these "advantages" are accompanied by significant risks and costs (see the safety and side effects section below), and we cannot simply praise the effects while ignoring potential harms.

Part 4 Pharmacological characteristics (how it works in the body)

* Receptor affinity: oxymetholone is an androgen receptor (AR) agonist that exerts anabolic effects by binding to AR; as a 19-desmethyl or DHT derivative, it exhibits a high anabolic effect in tissues and a relatively weak description of the classic androgenic effect. ([Wikipedia][1])

* Estrogenic and progestogenic properties: Although it is not a typical aromatized product (the main pathway for non-aromatization to estrogen conversion), oxymetholone has been reported to cause water retention and rare male breast development (gynecomastia), which may be related to its ability to directly activate estrogen receptors or metabolites. Therefore, its "non-aromatization but still estrogen-like side effects" characteristics have been discussed in the literature. ([Wikipedia][1])

Part 5 Side effects, safety and toxicology (key risks)

This section is the most "burdensome" description of oxymetholone - its side effects are many and may be serious, and the literature is particularly concerned about its liver toxicity.

1. Hepatotoxicity (most worthy of attention)

Oxymetholone belongs to 17α-alkylated steroids. This type of compound has enhanced oral tolerance but significantly increases the metabolic burden on the liver. Clinical and animal studies have reported cases of elevated transaminases, cholestatic jaundice, hepatic adenoma and even hepatocellular carcinoma; long-term or high-dose use is significantly associated with severe liver damage. Therefore, liver function monitoring is an indispensable means during use (if in a medical setting). ([PubMed][6])

2. Blood lipids and cardiovascular risks

Users often experience adverse blood lipid changes such as decreased high-density lipoprotein (HDL) and increased low-density lipoprotein (LDL), which will increase the long-term risk of atherosclerosis and cardiovascular disease. Accompanying increased blood pressure, edema or increased cardiac burden have also been reported. ([Wikipedia][1])

3. Endocrine suppression and sexual function effects

Similar to other exogenous androgens, oxymetholone inhibits endogenous testosterone production. Long-term use and discontinuation may lead to symptoms of low testosterone (fatigue, decreased libido, mood changes, etc.), and recovery strategies need to be considered in medical settings. ([Wikipedia][1])

4. Androgenization symptoms (higher risk in women)

Women may experience irreversible changes such as deepening of the voice, menstrual disorders, increased body hair, and masculinized genital changes. Therefore, the risk is particularly high in women. ([Wikipedia][1])

5. Digestive system and neuropsychiatric aspects

Nausea, abdominal pain, mood swings, depression, or changes in aggression have all been reported. In certain cases, non-specific adverse reactions such as changes in urine or skin color and headaches may also occur. ([RxList][7])

Part 6 Quality Control, Identification and Analytical Methods (Raw Powder Perspective)

During the production, procurement and inspection stages, raw powders should undergo rigorous physical, chemical and spectroscopic identification. Common methods include:

* Appearance and melting point determination (to ensure consistency with literature values); ([NIST WebBook][3])

* Infrared spectroscopy (IR), nuclear magnetic resonance spectroscopy (NMR) and mass spectrometry (MS) for structure confirmation; ([PubChem][4])

* High performance liquid chromatography (HPLC) for purity and impurity profile analysis and issuance of a report of assay (CoA);

* Residual solvent testing, microbial limits and heavy metal testing;

* Stability testing (study of degradation products under light, heat and humidity conditions).

Regular pharmaceutical-grade suppliers will provide complete batch test certificates, while powders from unregulated sources on the market often lack such information, posing quality and safety risks. ([PubChem][4])

Part 7 Storage, Packaging and Handling Recommendations (Laboratory/Production Environment)

* Storage conditions: sealed, protected from light, dry, low temperature (keep in a cool place at room temperature or refrigerate according to the manufacturer's recommendations), avoid contact with strong oxidants; ([National Center for Biotechnology Information][5])

* Handling precautions: Wear appropriate personal protective equipment (gloves, goggles, dust mask or respiratory protection) during powder handling and dissolution to avoid inhalation of dust or prolonged skin contact;

* Disposal: Dispose of in accordance with hazardous chemicals or pharmaceutical waste regulations and avoid arbitrary discharge.

Part 8 Legal and Ethical Tips

In many countries and regions, oxymetholone and its non-medical uses are strictly regulated and are classified as prescription drugs or controlled substances. Over-the-counter purchase, distribution or misuse outside of competitive sports often involves legal risks and may lead to anti-doping violations. Anyone considering medical use should proceed through compliant channels and under the guidance of a licensed physician. ([Wikipedia][1])

Part 9: Reality and Risk Weighing in the Fitness Circle (Summary Recommendations)

From the perspective of fitness effects, oxymetholone can bring significant weight and strength gains in the short term, as well as endurance improvements due to erythropoiesis; however, from the perspective of health and long-term risks, its hepatotoxicity, negative effects on blood lipids and cardiovascular health, endocrine suppression, and the risk of masculinization in women are all very significant. Therefore:

1. Academic and medical information should be given priority, and any drug-related medical decision should be evaluated by a qualified medical expert or pharmacist. ([PubMed][6])

2. Non-medical use, over-the-counter acquisition, or use through the underground market carries both legal and health risks. ([Wikipedia][1])

3. If used in a regulated medical setting, key indicators such as liver function, blood lipids, blood pressure, and blood routine tests should be strictly monitored, and a high degree of vigilance should be maintained for potential adverse events. ([PubMed][6])