Liver Toxicity of Oral Anabolic Steroids
17-alpha-alkylated orals, peliosis hepatis, and cholestasis
Evidence grade 4 of 5, Strong. Read how the Atlas grades evidence.
The written rationale for this grade is still being prepared.
- FDA
- Some 17-aa androgens have restricted approvals; most illicit oral use is unapproved
Reference only. Not medical advice.
What can go wrong
Cholestatic jaundice, raised liver enzymes, peliosis hepatis with potential for life-threatening intra-abdominal hemorrhage on rupture, and, with prolonged use, hepatic tumors. Risk rises with dose, duration, and concurrent hepatotoxins (alcohol, other 17-aa orals). Many illicit oral 'cycles' stack multiple 17-aa compounds, compounding the load.
This is something to take to a clinician. The Atlas can tell you what is known about liver toxicity of oral anabolic steroids in general. It cannot tell you what is happening in your body, and the difference matters most for exactly the symptoms that bring people to this page.
Oral anabolic steroids are typically 17-alpha-alkylated (17-aa) - a structural modification that lets them survive first-pass liver metabolism so they can be taken by mouth (e.g., methyltestosterone, stanozolol, oxymetholone, methandrostenolone). That same modification makes them hepatotoxic. Documented harms include cholestatic liver injury (jaundice, elevated bilirubin), elevated transaminases, peliosis hepatis (blood-filled cysts in the liver that can rupture), and, with long-term use, hepatic adenomas and rare hepatocellular carcinoma. By contrast, transdermal and injectable testosterone replacement, which is not 17-aa, is not classically hepatotoxic.
The chemical tweak that makes a steroid swallowable also makes it poison the liver.
What people take it for
What it is taken for. Approval, where it exists, covers only some of these.
How it works
Alkylation at the 17-alpha position blocks the liver from rapidly metabolizing the steroid, giving oral activity - but it also interferes with hepatic bile transport and hepatocyte function, producing cholestasis and direct hepatocellular stress. Sustained exposure can cause peliosis (dilated blood-filled spaces in the liver) and neoplastic change. Injectable, non-17-aa androgens largely avoid this because they bypass first-pass liver loading.
Safety in detail
Oral 17-alpha-alkylated anabolic steroids are hepatotoxic and can cause serious liver injury, including cholestasis and the blood-filled cysts of peliosis hepatis. Use requires liver monitoring under medical supervision; self-administration carries documented risks.
- Cholestatic jaundice from 17-aa orals
- Peliosis hepatis with hemorrhage risk
- Hepatic adenoma and rare carcinoma
- Compounded by stacking multiple orals
Replacement is not the same as a cycle
Hepatotoxicity is a feature of orally active 17-alpha-alkylated (17-aa) androgens taken at supraphysiological doses, not of physiological transdermal/injectable testosterone replacement, which largely bypasses first-pass hepatic exposure and is not classically hepatotoxic.
What has to be monitored
The bloodwork this needs, and the reason it belongs with a clinician rather than a website.
- Liver enzymes (ALT, AST)
- Bilirubin
- Hepatic imaging if symptomatic
- Symptom review for jaundice/abdominal pain
What people get wrong
Often said'All steroids wreck your liver'
ActuallyHepatotoxicity is specific to 17-alpha-alkylated oral compounds; non-17-aa injectable and transdermal androgens are not classically hepatotoxic. The route and structure, not 'steroids' generically, drive liver harm.
Often said'Liver support supplements make orals safe'
ActuallyNo supplement reliably prevents 17-aa hepatotoxicity; marketed 'liver support' does not neutralize the structural cause of the injury.
Who profits, and who pushes back
Nobody is named here yet, because we have not done that work on this entry. Read that as unfinished. Somebody almost certainly sells this, and somebody almost certainly disputes it. Assume both until we have checked.
At a glance
- Cause
- 17-alpha-alkylation (oral bioavailability)
- Cholestasis
- Jaundice, raised bilirubin
- Peliosis hepatis
- Blood-filled hepatic cysts; rupture risk
- Long-term
- Adenoma; rare hepatocellular carcinoma
What this entry does not yet cover
What follows is unfinished work on our side, not a finding about Liver Toxicity of Oral Anabolic Steroids. A short entry is not a safe entry.
- Timeline. We have not built the dated record of research and regulatory events.
- Cost and market. We have not documented what it sells for or who sells it.
- Supply chain. We have not mapped where it is made.
- Who uses it. We have not documented the user groups.
- What could change. No forward-looking summary yet.
- How it compares. We have not set it against the alternatives.
- Children and teenagers. We have not checked what is known about younger people.
- Where we land. We have not taken a position on this yet.
Sources
The studies below are named and described, but not linked. You cannot open them from here and check our reading against them, which means this page is our summary of the literature rather than a document you can verify. Weigh it accordingly until the links exist.
The studies that matter
Hepatotoxicity literature on 17-aa androgens (incl. LiverTox)ongoing
17-alpha-alkylated oral androgens are recognized causes of cholestatic injury, peliosis hepatis, and rare hepatic tumors