Anadrol

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Anadrol

Treatment option: Anemia, Myelofibrosis, Folic Acid

Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Anadrol

Property Description
Active ingredient Oxymetholone
Form Oral tablets
Pharmacological class Anabolic-Androgenic Steroid (AAS)
General purpose Countering severe catabolic states and promoting tissue mass
Origin Synthetic, Dihydrotestosterone (DHT) derivative

What is the Drug Class and Composition of Oxymetholone?

Oxymetholone is the pharmaceutical name for the active compound in the product known as Anadrol, formally classified as a potent synthetic anabolic-androgenic steroid (AAS). This active ingredient is a structurally modified derivative of dihydrotestosterone (DHT), possessing a critical distinguishing feature known as 17alpha-alkylation. This specific chemical structure is the reason the compound can be absorbed effectively via the oral route, positioning it as an orally active agent, and it is supplied as a single-ingredient formulation of oral tablets. Pharmacological studies have widely confirmed that this compound exhibits a particularly high anabolic ratio relative to its androgenic effects, differentiating its mechanism from many other steroids. This established property is central to its therapeutic utility.

What is the Primary Role of this Synthetic Androgen?

The primary general purpose of Oxymetholone is to provide robust pharmacological support against severe involuntary tissue loss and to counteract significant catabolic states in the body, which is a medically recognized application. The drug achieves this by strongly enhancing the production of erythropoietin, thereby stimulating erythropoiesis (red blood cell formation), a key action that supports overall physical capacity. Furthermore, the compound is clinically recognized for its capacity to promote protein synthesis and maintain a positive nitrogen balance. This potent mechanism is essential for managing debilitating conditions, supporting the patient's ability to retain and rebuild functional tissue mass when ordinary nutritional measures are inadequate.

What side effects are possible with Anadrol?

Possible Side Effects and Safety Information

The safety profile of Oxymetholone is defined by its effects on the liver (hepatotoxicity) and its potent androgenic activity, as documented in regulatory texts like the FDA Prescribing Information.

Adverse Reactions and System-Organ Classes

The adverse reactions associated with this medicine are formally classified by the affected physiological system, with effects commonly observed in several areas:

System-Organ Class (SOC) Examples of Officially Listed Effects
Hepatobiliary Disorders Cholestatic jaundice, elevated liver enzymes
Reproductive System Virilization in females, testicular atrophy in males
Skin Disorders Acne, hirsutism (excessive hair growth)
Metabolism Disorders Edema (fluid retention), changes in blood lipid profiles

Serious Safety Concerns and Duration-Related Risks

Serious adverse reactions are explicitly documented in official labeling. These include potentially life-threatening conditions related to the liver, such as Peliosis Hepatis (blood-filled liver cysts) and the development of Hepatic Neoplasms (liver tumors), which have been reported in connection with prolonged therapy.

Population-Specific Safety Notes

The official labeling outlines specific safety considerations for certain patient groups:

  • Females: The development of virilization (masculine characteristics) is a known and potentially irreversible risk.
  • Pediatric Patients: Use may cause accelerated bone maturation, requiring monitoring to prevent compromised adult height.
  • Geriatric Males: There is a noted potential for an increased risk concerning prostatic issues, including prostatic carcinoma.

Safety-Related Restrictions

Oxymetholone is formally contraindicated in specific high-risk situations, notably for patients with severe hepatic disease or dysfunction, as well as in males with known or suspected carcinoma of the prostate or male breast.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Oxymetholone (Anadrol) is defined by its inherent toxicity risks rather than an acute symptom cluster. Regulatory documentation explicitly states that no reports of acute overdosage with this class of anabolic steroids have been documented.

Mandatory Emergency Actions

When an overdose is suspected, the regulatory instruction is mandatory: contact a poison control center or emergency room at once. Immediate medical attention is required due to the potential for severe, life-threatening complications documented in the drug's toxicity profile.

Official Risks and Outcomes

The most critical risks documented in the regulatory labeling are the hepatic and cardiac systems. Severe exposure or continued high toxicity is associated with outcomes such as hepatic necrosis, hepatic coma, and, in rare instances, death. Fluid retention (edema) is a significant concern, as this can lead to or worsen congestive heart failure. Patients with pre-existing cardiac, renal, or hepatic disease are specifically noted as being at increased risk for these severe fluid-related complications.

Management and Monitoring

Since no specific antidote is known or listed in the official documents, management for suspected overdose involves providing symptomatic and supportive treatment. Due to the critical risk of drug-induced hepatotoxicity, periodic liver function tests are a required component of monitoring.

Therapeutic Uses of Anadrol

What Anadrol Treats: Main Uses and Benefits

The medication may be part of symptomatic management for severe anemias associated with deficient red cell production, such as acquired and congenital aplastic anemia, myelofibrosis, and hypoplastic anemias resulting from myelotoxic drug administration. The key therapeutic benefit is relevant for addressing symptoms related to systemic imbalance, such as profound fatigue and weakness, associated with critically low blood counts. It is relevant in clinical settings marked by the presence of severe anemia and profound tissue wasting.


Counteracting Profound Tissue Wasting (Catabolism)

In a distinct metabolic application, the medication is applied in situations involving profound tissue wasting and cachexia. The medication is applied when appropriate to support patients facing chronic debilitating conditions where involuntary loss of functional body tissue is a critical concern.

“The supportive role helps patients cope more steadily during difficult episodes of severe tissue loss.”

The treatment assists with maintaining functional stability and supports patients during difficult episodes by easing distress related to tissue loss.


Quick Fact: Relevant for Severe Fatigue The medicine is commonly used to help with symptoms of systemic imbalance, particularly the severe weakness and chronic fatigue that accompany low blood cell counts.

Eligibility and Restrictions for Use

Official Population Eligibility for Anadrol (Oxymetholone)

Official regulatory documents define strict criteria for who can and cannot use Anadrol, primarily based on the patient's existing health conditions and physiological status.

Contraindicated Populations (Must Not Use)

Classification Restricted Population Rationale/Condition
Oncological Status Male patients with carcinoma of the prostate or breast. Absolute prohibition by regulatory bodies.
Female patients with carcinoma of the breast and hypercalcemia. Absolute prohibition by regulatory bodies.
Organ Function Patients with severe hepatic dysfunction or severe liver disease. Absolute prohibition.
Patients with nephrosis or the nephrotic phase of nephritis. Absolute prohibition.
Reproductive Status Women who are pregnant or may become pregnant (Pregnancy Category X). Contraindicated due to risk of fetal harm.
Breastfeeding mothers. Use is not recommended.

Conditional Use and Special Considerations

  • Age Groups: Use is established for the treatment of specific anemias in children. Pediatric patients require monitoring for accelerated bone maturation. Older adult males require caution and monitoring for prostatic issues.
  • Comorbidities: Patients with pre-existing cardiac, renal, or hepatic disease must use the medicine with extreme caution due to the risk of aggravating fluid retention (edema).
  • Other Restrictions: Women must be closely monitored for signs of virilization, and the drug must be discontinued promptly if detected.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Anadrol (oxymetholone) is associated with several clinically significant drug-drug and drug-class interactions, primarily affecting blood coagulation, blood sugar regulation, and fluid balance. When co-administered with certain other medications, careful monitoring and dosage adjustments are generally required.

Interacting Product Category Key Interaction Mechanism & Relevance
Oral Anticoagulants (e.g., Warfarin) Oxymetholone may significantly increase sensitivity to oral anticoagulants. This is due to the potential suppression of clotting factors (II, V, VII, and X) and an increase in prothrombin time (PT) or International Normalized Ratio (INR). Close and frequent monitoring of PT/INR is required, and the anticoagulant dose may need to be lowered.
Adrenal Steroids / ACTH (Corticosteroids) Concomitant use with adrenal steroids or corticotropin (ACTH) may increase the risk and severity of edema (fluid retention). This interaction is of particular concern for patients with underlying cardiac, renal, or hepatic disease.
Antidiabetic Agents (e.g., Insulin, oral hypoglycemics) Anabolic steroids can alter blood sugar levels and glucose tolerance. The metabolic effects may decrease blood glucose, necessitating a dosage adjustment for insulin or other antidiabetic medications in diabetic patients.
Cyclosporine Combination may lead to increased cyclosporine concentrations, raising the potential risk of liver or kidney toxicity. Close monitoring is advised during coadministration.

Additionally, Anadrol may cause laboratory test interference by decreasing thyroxine-binding globulin levels, which can result in decreased total T4 serum levels, although free thyroid hormone levels are typically unchanged. Patients should inform their healthcare providers of all concurrent drug and supplement use.

Mechanism of Action

Anadrol (oxymetholone) is a synthetic steroidal androgen which functions as an androgen receptor (AR) agonist. The molecule selectively interacts with the ligand-binding domain of the cytoplasmic AR. This binding event induces a conformational change in the receptor, leading to the dissociation of chaperone proteins, such as heat-shock proteins.

The activated ligand-receptor complex subsequently translocates across the nuclear envelope into the nucleus.

Within the nucleus, the liganded AR forms a homodimer and binds to specific Androgen Response Elements (AREs), which are consensus DNA sequences located in the promoter regions of target genes. This binding modulates gene transcription, recruiting co-activator or co-repressor proteins to alter the rate of mRNA synthesis. This cascade of molecular events results in the modulation of the expression of numerous genes involved in cellular processes, leading to systemic physiological consequences, including alterations in nitrogen balance and erythropoiesis.

Dosage and Administration Information

How to Use Anadrol

Oxymetholone, the active ingredient in Anadrol, is officially administered via the oral route as a 50 mg tablet. The medication is used strictly as an adjunctive measure and is not intended to replace other essential supportive therapies, such as blood transfusions or the correction of nutritional deficiencies.

Dosing and Administration Schedule

Dosage is determined by the patient’s body weight and must be highly individualized within the official guidelines. The usual starting dose for adults and children is in the range of 1 to 5 milligrams per kilogram (mg/kg) of body weight per day. The total daily dose is typically administered once daily.

Usage Parameter Regulatory Guideline
Route of Administration Oral
Frequency Once daily
Dosing Basis Calculated per kilogram of body weight
Contextual Use Adjunct to primary supportive care

Course Duration and Special Populations

Since the therapeutic effect is not immediate, the official protocol dictates a minimum trial period of three to six months for assessment. Following remission, the regimen may involve either discontinuation or maintenance at a reduced dose, particularly for congenital aplastic anemia.

Special care is directed toward certain patient groups: the dose for older adults should be chosen cautiously, often starting at the lower end of the prescribed range. Furthermore, the drug must be administered with caution in the presence of existing hepatic or renal impairment.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Anadrol (Oxymetholone)


Evidence for Use in Severe Anemias

Research exploring oxymetholone for use in various severe anemias, such as aplastic anemia and myelofibrosis, includes older non-randomized studies and observational cohort analyses that informed regulatory reviews. These studies examined conditions characterized by profound lack of red blood cell production. Research has explored key outcomes, including changes in hematological parameters like red blood cell and hemoglobin levels, and the documentation of patient status over time, including survival status, for the observed populations. Variability in findings across different types and severities of anemia means certainty remains low regarding consistent outcomes across all patient groups.


Evidence for Counteracting Profound Tissue Wasting (Catabolic States)

Research exploring the use of oxymetholone for profound tissue wasting (cachexia) has been evaluated in short-term, placebo-controlled Randomized Controlled Trials (RCTs). These studies focused on specific conditions, such as wasting associated with chronic debilitating diseases. Studies monitored outcomes related to body composition, specifically measuring changes in Lean Body Mass (LBM) and total body weight. Findings described measured differences in LBM and total body weight that were reported in the intervention group compared to the placebo group over the course of the study.


What is Still Uncertain About Anadrol Research

A primary area of uncertainty is the variable quality and age of the research focusing on anemias. The lack of recent, large-scale controlled trials makes objective comparison with alternative pharmacological approaches difficult. For both indications, the long-term functional outcomes remain insufficiently characterized. While research has explored body composition and blood counts, there is limited information regarding the durability of effects on a patient's daily functioning or quality of life after extended use or cessation. Research describes group patterns, and individual outcomes may vary from those reported in the existing literature.

Frequently Asked Questions (FAQ)

Common questions about Anadrol (FAQ)

Q: Is Anadrol still available for prescription in countries like the United States?

The active ingredient, oxymetholone, is available as an FDA-approved prescription medicine in the United States, often under the brand name Anadrol-50. Official documentation states that it is specifically used for the treatment of certain types of anemia.

Q: Are regular liver function tests typically necessary during treatment with Anadrol?

Due to the recognized risk of liver toxicity associated with this medicine, official prescribing information recommends that patients undergo periodic liver function tests. This monitoring is documented as a measure to check for potential changes in liver function during the course of treatment.

Q: Is it possible for Anadrol to affect blood pressure?

Official regulatory documents list cardiovascular issues among the potential adverse reactions associated with the medicine. Specifically, hypertension, which is high blood pressure, has been noted as an associated side effect.

Q: Does the medicine have the potential to cause changes in mood or sleep patterns?

The official product information includes potential effects on the central nervous system. These documented side effects may include excitation and sleep problems, such as insomnia.

Q: Does Anadrol affect the body's natural production of hormones?

Regulatory documents indicate that as an anabolic-androgenic steroid, the medicine has the potential to suppress the body’s natural hormone production. This occurs by interfering with the chemical signals sent between the pituitary gland and the testes.

Q: What happens when a patient stops taking Anadrol treatment?

The cessation of treatment may result in temporary effects related to suppressed hormone production. Authoritative sources note that these temporary effects may include feelings of fatigue, anxiety, or changes in mood.

Q: What is the risk of dependence or withdrawal symptoms associated with Anadrol?

The class of medicines known as anabolic steroids has been associated with the potential for psychological dependence. The discontinuation of anabolic steroids has been associated with the potential for withdrawal-like symptoms, which may include fatigue or depression.

Q: Is Anadrol banned from use in athletes by major sporting organizations?

Yes, the active ingredient, oxymetholone, is classified as an Anabolic Androgenic Steroid (AAS). It is listed as prohibited for use by athletes at all times according to the World Anti-Doping Agency (WADA).

Q: Does Anadrol interact with alcohol consumption?

Regulatory sources indicate a major interaction between this medicine and alcohol. Due to the medicine’s known liver toxicity, the interaction noted in regulatory sources may pose a greater risk of liver-related adverse events.

Q: What is the significance of Anadrol being a 'Schedule III' controlled substance?

The medicine is classified as a Schedule III controlled substance under the federal Controlled Substances Act (CSA). This legal designation indicates that the drug has an accepted medical use but also possesses a moderate potential for abuse or dependence.

Q: What is known about Anadrol's effect on libido (sex drive)?

Safety information documents that the medicine has the potential to cause changes in libido, or sex drive. This effect is described as potentially resulting in either an increase or a decrease in sexual interest.

Q: How does Anadrol affect the balance of fluid and electrolytes in the body?

Official product information notes that the medicine can affect the body's fluid and electrolyte balance. This may result in fluid retention (edema) and the retention of certain key minerals in the blood, such as sodium, potassium, and calcium.

Q: How does Anadrol differ from a glucocorticoid, which is sometimes also called a 'steroid'?

Although both fall under the general class of steroids, Anadrol is specifically classified as an anabolic-androgenic steroid. It works primarily to stimulate tissue growth and red blood cell production. Glucocorticoids, in contrast, are generally prescribed to affect inflammation and immune responses.

Q: What kind of cardiovascular issues are associated with the use of Anadrol?

Safety information outlines several cardiovascular issues that have been associated with this medicine. These include adverse changes to blood lipid profiles (cholesterol), fluid retention (edema), and hypertension, which is high blood pressure.

Q: Can Anadrol use affect fertility or sperm production in males?

The medicine's androgenic properties mean it can potentially affect male reproductive health. Official information notes that it may cause testicular atrophy and can suppress the necessary hormone signaling required for natural sperm production.

Q: What are the signs of liver issues (e.g., jaundice, upper stomach pain) that a patient should watch for?

Official patient information describes certain signs of potential liver issues for which patients are monitored. These symptoms include yellowing of the skin or eyes (jaundice), dark urine, pain in the upper stomach area, and clay-colored stools.

Q: Are there any known side effects that are common in both men and women?

Some documented side effects are common across both male and female patients. These effects may include acne, breast swelling or tenderness (gynecomastia), sleep problems like insomnia, and gastrointestinal issues such as nausea, vomiting, or diarrhea.

Q: What types of information should a patient provide to their healthcare provider before starting Anadrol?

Regulatory precautions define which medical conditions, such as pre-existing heart, kidney, or liver conditions, must be reviewed with a healthcare provider before starting the medicine. The list of necessary information also includes history of cancer and all concurrent medicines, supplements, or blood thinners.

How should Anadrol be stored and disposed of?

Storage and Disposal of Anadrol (Oxymetholone)

Anadrol tablets must be stored at Controlled Room Temperature (CRT), defined as 20 C to 25 C (68 F to 77 F), with permitted temperature excursions up to 30 C.

The product must be kept in a tightly closed container and explicitly protected from light. It is mandatory that the tablets not be refrigerated or frozen.

All medication must be stored out of the sight and reach of children to prevent accidental ingestion.

Disposal Instructions

Unused or expired Anadrol should be disposed of via a drug take-back program when available. If a program is not accessible, the medicine can be mixed with an undesirable substance (such as dirt or cat litter) and sealed in a container before being discarded in household trash. It is explicitly prohibited to flush the medicine down a toilet or pour it down a sink.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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