Can medicines and supplements affect the liver?
Last content review 2026-09-23
The short answer
Prescription medicines, over-the-counter painkillers and unregulated herbal or "detox" supplements can all injure the liver in susceptible people. Herbal and dietary supplement–related liver injury is a recognised and growing category. Never stop a prescribed medicine on your own — discuss concerns with the prescriber.
What is happening?
Drug-induced liver injury can be predictable and dose-related (as with paracetamol overdose) or idiosyncratic and unpredictable.
Supplements are frequently not standardised, and product content can differ from the label.
Why does this matter?
Patients often do not mention supplements during consultations, yet they matter for interpreting abnormal liver tests.
Bring a full list — prescriptions, over-the-counter medicines, ayurvedic and herbal products — to any liver consultation.
What does the evidence say?
Drug- and herbal supplement–induced liver injury is documented in national registries and reviewed in AASLD guidance; reported cases involving supplements have increased over time.
Key takeaway
Everything you swallow passes through your liver — including the things marketed as natural.
Sources & references
American Association for the Study of Liver Diseases
AASLD Practice Guidance on the clinical assessment and management of nonalcoholic fatty liver disease (2023) · Clinical guideline
View original sourceUS National Institute of Diabetes and Digestive and Kidney Diseases
LiverTox: Clinical and Research Information on Drug-Induced Liver Injury (2012) · Official health information
View original source
This page is general health education. It is not a diagnosis, and it cannot replace advice from your treating doctor. Never start or stop a prescribed medicine based on what you read here.