Steroid drug profile
Dianabol: Methandrostenolone Facts, Effects and Risks
Dianabol is a former brand name associated with methandrostenolone, also called methandienone or metandienone. It is an orally active anabolic androgenic steroid related to testosterone. Methandrostenolone has been studied for effects on body weight and physical performance, but it can cause serious liver, cardiovascular, hormonal and psychological harm. 2
Anabolic.co provides general educational information. We do not sell Dianabol, recommend suppliers, design steroid cycles, provide personal dosing advice or explain how to avoid drug testing.
Drug identity
Dianabol
Methandrostenolone
- Other names
- Methandienone, metandienone, Dbol
- Drug class
- Anabolic androgenic steroid
- Common form
- Oral tablet
- Structural type
- 17 alpha alkylated androgen
- Parent class
- Testosterone related androgen
- Main safety focus
- Liver injury, cardiovascular effects and hormone suppression
Methandrostenolone is identified by DEA within the anabolic steroid class. The 2026 World Anti Doping Agency list includes metandienone among prohibited anabolic agents. LiverTox places methandrostenolone within the 17 alpha alkylated androgen group associated with serious liver outcomes. 1 5 7
What Is Dianabol?
Dianabol is a name historically used for methandrostenolone. The drug is also called methandienone or metandienone. Dbol is an informal abbreviation used in bodybuilding and online discussions. PubMed records use both methandienone and Dianabol when identifying the drug studied in older controlled trials. 3
Methandrostenolone is part of the anabolic androgenic steroid class. These drugs are manufactured substances related to testosterone. They interact with androgen signalling throughout the body rather than acting only in skeletal muscle.
Dianabol is commonly associated with oral tablets. Being swallowed rather than injected does not make it safer. Its chemical modification supports oral activity, but the same structural feature is closely associated with liver injury. 1
Dianabol Names and Spellings
| Name | Meaning |
|---|---|
| Dianabol | Historical brand name |
| Methandrostenolone | Active drug name commonly used in United States material |
| Methandienone | Alternative generic name |
| Metandienone | Name used in international sports material |
| Dbol | Informal abbreviation |
| D bol or D ball | Search and slang variations |
These terms generally refer to the same active anabolic steroid. Similar sounding steroid names may refer to different drugs, so the active ingredient matters more than a brand name or slang term.
How Does Dianabol Work?
Methandrostenolone acts through androgen receptors. These receptors are located inside responsive cells. When activated, they influence gene activity and the production of proteins involved in growth, development and other androgen regulated processes. 1
This activity is not confined to muscle. Androgen receptors and related hormone systems affect reproductive tissues, skin, hair, the brain, blood vessels, the liver and other organs. A desired change in strength or body composition cannot be separated fully from effects elsewhere in the body.
Why Is Dianabol Taken Orally?
Methandrostenolone is a 17 alpha alkylated androgen. The modification at the 17 alpha position slows metabolic deactivation in the liver and allows the steroid to remain active when taken orally. 1
That oral availability carries an important trade off. LiverTox identifies 17 alpha alkylated androgens as the steroid group most closely linked with prolonged cholestasis, peliosis hepatis, liver adenomas and hepatocellular carcinoma. Methandrostenolone is specifically included within this group.
Read oral steroids compared with injectable steroids for a broader comparison.
Was Dianabol Ever Used Medically?
Methandrostenolone appears in medical research dating from the 1960s and later. Historical studies examined its effects in settings that included nutritional support, catabolic illness and physical training. PubMed records document Dianabol or methandrostenolone in older clinical research. 4
Historical investigation does not mean Dianabol should be treated as a current medicine for muscle building, athletic performance or general weight gain. Modern medical decisions depend on current approval, a recognised indication, the exact pharmaceutical product and professional monitoring.
Historical clinical research
Older studies examined methandrostenolone in medical and training settings.
Growth of nonmedical use
The drug became associated with physique and performance use outside medical direction.
United States controlled class
Methandrostenolone belongs to the federally controlled anabolic steroid class.
Current sport prohibition
Metandienone remains prohibited at all times under the 2026 WADA list.
What Effects Have Been Studied?
Body weight and composition
Older controlled research reported increases in body weight and some body composition measures during methandienone use combined with training. The studies were small and conducted decades ago.
Strength and performance
Some older studies reported increases in strength or training performance. The size and practical meaning of the changes varied between study designs.
Evidence limits
Old methods, small groups, short follow up and pharmaceutical study material limit the relevance to unregulated products sold today.
Evidence that a drug can produce an effect is not evidence that nonmedical use is safe. 3
Common Dianabol Claims Compared With Evidence
| Common claim | Evidence assessment | Anabolic.co response |
|---|---|---|
| Rapid permanent muscle gain | Limited | Older studies reported weight and some body composition changes, but weight does not prove durable muscle gain. |
| Large strength gains for every user | Limited | Older findings varied and cannot predict an individual result. |
| Oral steroids are safer than injections | Incorrect | Oral methandrostenolone belongs to a structural group closely linked with liver injury. |
| Brief use avoids harm | Unsupported | Serious effects cannot be ruled out by a short duration. |
| Liver supplements prevent damage | Unsupported | Supplements do not remove the risk of cholestasis or other steroid related liver injury. |
| Side effects are predictable | Incorrect | Risk varies with health, product identity, exposure and individual response. |
| A normal looking tablet is authentic | Unknown product | Colour, shape, packaging and online reviews do not confirm identity or strength. |
| Medical monitoring makes bodybuilding use safe | Incorrect | Monitoring may detect some problems but cannot remove the drug’s inherent risks. |
Dianabol Side Effects and Health Risks
Dianabol specific safety data are incomplete, so this profile considers both methandrostenolone evidence and established effects of the anabolic androgenic steroid class. Risk depends on exposure, duration, other substances, existing conditions and the actual product contents.
Liver and bile flow
Possible signs include itching, dark urine, jaundice, fatigue and nausea. Injury may continue after the steroid is stopped.
Heart and blood vessels
Anabolic steroid exposure is associated with high blood pressure, adverse cholesterol changes and other cardiovascular outcomes.
Fluid retention
Fluid related weight gain may be mistaken for muscle and can matter for people with heart, kidney or blood pressure concerns.
Hormones and fertility
External androgen exposure can suppress natural testosterone and sperm production and may affect fertility.
Breast tissue growth
Hormone disruption can contribute to breast tissue growth in men.
Skin and hair
Possible effects include acne, oily skin, scalp hair loss and changes in body or facial hair.
Mood and behaviour
Use has been associated with irritability, aggression, altered mood, cravings and depression during withdrawal.
Medicine interactions
Methandrostenolone has been reported to alter anticoagulant requirements, so professional monitoring is important.
Dianabol and Liver Injury
Liver injury is the central medical concern for methandrostenolone because it is a 17 alpha alkylated anabolic steroid. This chemical feature supports oral availability but is closely connected with several forms of liver damage.
Cholestasis
Cholestasis occurs when normal bile flow from the liver is impaired. LiverTox describes anabolic steroid cholestasis as an illness that may begin gradually with nausea, fatigue and itching, followed by dark urine and jaundice. Symptoms can continue for an extended period after the steroid is discontinued. 1
Liver tests can appear less severe than the symptoms
Anabolic steroid cholestasis can cause deep jaundice even when some liver enzyme measurements are only modestly raised. One result should not be used to declare an unregulated steroid harmless.
Peliosis hepatis
Peliosis hepatis involves blood filled spaces within the liver. It may cause enlargement, abdominal discomfort or, rarely, internal bleeding following liver rupture.
Liver masses and tumours
Long exposure to androgenic steroids has been associated with liver adenomas and hepatocellular carcinoma. These outcomes are uncommon but serious.
Can Dianabol Suppress Natural Testosterone?
Yes. As an external anabolic androgenic steroid, methandrostenolone can interfere with the hormone feedback system that regulates natural testosterone production.
The brain and pituitary gland normally send signals that support testosterone and sperm production. External androgen exposure can suppress those signals. Anabolic steroid users may experience reduced testosterone, lower sperm production, infertility, shrinking of the testicles, sexual symptoms and mood changes.
Recovery is not identical for everyone. It can depend on the compounds used, exposure, duration, age, underlying health and previous hormone function. Some people continue to experience hormone or fertility problems after stopping.
Dianabol and Medicine Interactions
FDA androgen labels state that C 17 substituted testosterone derivatives such as methandrostenolone have been reported to reduce anticoagulant requirements. People receiving oral anticoagulants require close professional monitoring when androgens are started or stopped. 11
Tell a health professional about every steroid, bodybuilding product, prescription medicine and supplement you use. Do not alter an anticoagulant, diabetes medicine or other prescribed treatment without medical advice.
Is Dianabol Legal in the United States?
Methandrostenolone belongs to the anabolic steroid class controlled under Schedule III of United States federal law. DEA material identifies methandrostenolone among anabolic steroids. 5
Manufacture, prescribing, dispensing, possession and distribution are controlled. A person cannot assume an online source is lawful because it uses terms such as research product, export product or legal steroid. State laws may add separate requirements or penalties.
Read the broader United States steroid legal framework.
This page provides general information and is not legal advice.
Is Dianabol Banned in Sport?
Yes. The 2026 World Anti Doping Agency Prohibited List places anabolic agents in category S1 and prohibits them at all times, during and outside competition. Metandienone appears as a prohibited anabolic agent. 7
The prohibition can apply to the parent drug, metabolites and related analytical findings. Athletes are responsible for substances found in their samples and should check current sport rules and therapeutic use requirements.
Does Dianabol Show Up on a Drug Test?
Methandienone and its metabolites can be targeted by sports and specialist laboratory testing. Not every workplace drug panel tests for anabolic steroids. Testing depends on the purpose, included substances, sample type and laboratory method.
Urine is common, while blood, hair and other samples may be used in some settings. There is no single detection period that applies to every product or person. Detection varies with exposure, metabolism, sample and analytical method.
Counterfeit Dianabol and Unknown Tablets
A tablet sold as Dianabol cannot be authenticated by colour, shape, imprint, packaging, country of origin or seller reviews alone.
Wrong drug
The tablet may contain another anabolic steroid or a different active substance.
Wrong strength
The actual amount may be higher, lower or absent.
Contamination
Products may contain pharmaceutical, chemical or microbial contaminants.
FDA investigations have found bodybuilding products marketed as supplements that contained hidden steroids or steroid like substances. Reported reactions have included severe liver injury, kidney damage, heart attack, stroke and blood clots. 8
Words such as natural, legal, pharmaceutical grade, laboratory tested or authentic do not verify an online product. A seller supplied certificate is not the same as independent regulatory testing.
When to Seek Medical Help
FDA guidance identifies symptoms including nausea, weakness, fatigue, fever, abdominal pain, chest pain, shortness of breath, jaundice and discoloured urine as reasons to contact a health professional when a bodybuilding product may contain a steroid. 8
Call 911 for a medical emergency in the United States. Call or text 988 for immediate support with suicidal thoughts or a mental health crisis.
Dianabol Compared With Other Steroids
A steroid comparison should identify the active drugs and comparison criteria. It should not rank compounds or recommend one drug over another.
Dianabol and Anadrol
Dianabol contains methandrostenolone. Anadrol contains oxymetholone. Both are oral 17 alpha alkylated steroids, but they have different medical histories and adverse effect profiles.
Dianabol and Anavar
Dianabol contains methandrostenolone. Anavar is associated with oxandrolone. They are separate oral anabolic steroids and neither is safe for nonmedical use.
Oral and injectable steroids
The route changes the pattern of exposure and some risks. It does not create a category free from risk.
How Anabolic.co Reviews Dianabol Information
Team Anabolicco reviews Dianabol content against:
- National Library of Medicine drug and liver injury resources
- PubMed indexed clinical research
- United States Drug Enforcement Administration material
- Food and Drug Administration safety notices and drug labels
- World Anti Doping Agency rules
- Peer reviewed research on anabolic steroid effects
- Current internal editorial and corrections policies
We distinguish historical research from current medical practice. We also separate demonstrated findings, limited evidence and unsupported bodybuilding claims.
Bodybuilding forums, supplier websites, testimonials, transformation photos and anonymous user reports are not treated as proof of product identity, safety or effectiveness.
Anabolic.co does not sell methandrostenolone, recommend underground sellers, create cycles, provide dosing schedules or accept payment to change medical or legal conclusions.
Frequently Asked Questions
What is Dianabol?
Dianabol is a historical brand name associated with methandrostenolone, an oral anabolic androgenic steroid related to testosterone.
Is Dianabol the same as Dbol?
Yes. Dbol is an informal abbreviation commonly used for Dianabol or methandrostenolone.
What is methandrostenolone?
Methandrostenolone is an orally active anabolic androgenic steroid. It is also called methandienone or metandienone.
Is Dianabol taken orally?
Dianabol is commonly associated with oral tablets. Its 17 alpha alkylated structure supports oral activity but is also closely associated with liver injury.
Does Dianabol build muscle?
Older small studies reported changes in body weight, body composition and some strength measurements. They do not establish a guaranteed result or safe nonmedical use, and body weight may include fluid and other tissue.
Can Dianabol damage the liver?
Yes. Methandrostenolone belongs to the 17 alpha alkylated androgen group linked with cholestasis, peliosis hepatis, liver adenomas and liver cancer.
Does Dianabol suppress testosterone?
Like other external anabolic steroids, methandrostenolone can disrupt natural hormone signalling and may reduce testosterone and sperm production.
Is Dianabol legal in the United States?
Methandrostenolone belongs to the Schedule III anabolic steroid class under United States federal law. Possession and distribution are controlled.
Is Dianabol banned in sport?
Yes. Metandienone is prohibited under category S1 of the 2026 World Anti Doping Agency Prohibited List.
Can Dianabol show up on a drug test?
Yes, when testing targets methandienone or its metabolites. Not every workplace panel includes anabolic steroids.
Are Dianabol tablets sold online reliable?
A seller’s label, image or review cannot verify a tablet’s identity, strength or purity. FDA investigations have found hidden steroid substances in products marketed for bodybuilding.
Can Dianabol side effects be prevented?
No method can guarantee prevention. Monitoring may identify some problems, but it cannot remove liver, cardiovascular, hormonal, psychological or product contamination risks.
References
- National Library of Medicine, LiverTox: Androgenic Steroids
- National Library of Medicine, PubChem: Methandrostenolone
- PubMed: Methandienone, body composition and performance
- PubMed: Historical methandrostenolone clinical research
- United States Drug Enforcement Administration: Steroids
- United States Drug Enforcement Administration: Drugs of Abuse, 2024 Edition
- World Anti Doping Agency: 2026 Prohibited List
- United States Food and Drug Administration: Bodybuilding Products Can Be Risky
- National Institute on Drug Abuse: Anabolic Steroids
- National Library of Medicine, MedlinePlus: Drug Testing
- United States Food and Drug Administration: Androgen label and anticoagulant interaction