Health condition
DILI severe reactions
Severe drug-induced liver injury (DILI) - from prescription drugs, over-the-counter medicines or herbal and dietary supplements - can progress to acute liver failure; early recognition, immediate withdrawal of the culprit and liver unit contact save lives.
Why trust this guide
- 01
Editorial team
Written by our editorial team from the UK sources listed on each page.
- 02
Sourced from guidance
Checked against current NHS and UK specialist society guidance at the time of review.
- 03
Current for 2026
Reviewed on 2026-09-27 with the next review scheduled for 2027-09-27.
Key points
What matters most, at a glance.
The essentials in plain English - symptoms, when to seek help, who to see and what treatment looks like.
-
Jaundice developing alongside raised liver enzymes after starting a new drug or supplement is DILI until proven otherwise
-
Jaundice with liver injury from a drug (Hy’s law pattern) carries a significant mortality - this combination always warrants urgent specialist review
-
Confusion or drowsiness with jaundice suggests liver failure: this is a 999 emergency
-
Common culprits include co-amoxiclav, flucloxacillin, anti-TB drugs, checkpoint inhibitors and bodybuilding or weight-loss supplements; paracetamol overdose is managed on its own pathway
-
The culprit is stopped immediately and never rechallenged; causality is assessed formally and other causes excluded
-
Most patients recover fully, but recovery is monitored to completion, not assumed
Understanding it
About DILI severe reactions, and what to do next.
Idiosyncratic DILI strikes unpredictably - often weeks after the drug began, sometimes after it stopped - and its severity spans a transient enzyme blip to fulminant failure. The dangerous signature is loss of liver function: jaundice, coagulopathy, and ultimately encephalopathy, which is why bilirubin and INR, not enzyme levels, carry the prognosis.
Specialist care runs exclusion (viral, autoimmune, vascular, biliary), supportive management, and early dialogue with a transplant unit for any coagulopathy or encephalopathy. Checkpoint-inhibitor hepatitis adds a steroid pathway of its own, and every confirmed reaction deserves formal reporting via the Yellow Card scheme. Most people start with their GP, who can refer to a consultant hepatologist. In many parts of the UK, routine NHS referrals for this kind of problem currently take 20-45+ weeks, whereas an initial private consultation is typically available within around two weeks.
A quiet reminder
This guide is for information, not medical advice.
Your GP knows your history and can tell you which parts apply to you. If in doubt, see them - and seek urgent care for any emergency symptoms described above.
Frequently asked
Common questions about DILI severe reactions.
Quick, plain-English answers to what people ask us most.
-
What is severe drug-induced liver injury (DILI)?
Severe drug-induced liver injury (DILI) is significant liver damage caused by prescription drugs, over-the-counter medicines, or herbal and dietary supplements, ranging from mild abnormalities to serious, potentially life-threatening liver failure.
-
What causes drug-induced liver injury?
It can be caused by direct toxic effects of certain medications on the liver, or by an unpredictable immune-mediated reaction to a drug, with numerous prescription drugs, over-the-counter medicines, and herbal supplements recognised as potential causes.
-
What are the symptoms of severe DILI?
Symptoms can include jaundice (yellowing of the skin and eyes), nausea, fatigue, abdominal pain, and dark urine, sometimes progressing to signs of liver failure such as confusion or bleeding in the most severe cases.
-
Is severe DILI dangerous?
Yes, severe cases can progress to acute liver failure, which can be life-threatening and may require urgent specialist liver care, including consideration of liver transplantation in the most serious cases.
-
How is severe DILI treated?
The essential first step is stopping the suspected causative drug or supplement, alongside supportive care, and in some cases specific antidotes (such as for paracetamol overdose-related liver injury) or specialist liver unit care for severe cases.
-
Can DILI be caused by herbal or dietary supplements?
Yes, herbal and dietary supplements are an increasingly recognised cause of significant drug-induced liver injury, and people often don't realise that 'natural' products can carry real risks to the liver, which is why it's important to mention all supplements to your doctor.
-
How is DILI diagnosed?
Diagnosis typically involves blood tests showing liver enzyme abnormalities, a careful medication and supplement history, and excluding other causes of liver injury (such as viral hepatitis), since there's no single definitive test for drug-induced liver injury.
-
Can the liver recover after DILI?
Many people recover well once the causative drug or supplement is identified and stopped, though recovery time varies, and some severe cases can result in lasting liver damage or, rarely, the need for a liver transplant.
-
How long does the liver take to recover after stopping the causative drug?
This varies considerably depending on the severity of the injury and the specific drug involved, ranging from weeks for milder cases to months for more significant injury, with regular blood test monitoring to track recovery.
-
When should I seek help for suspected drug-induced liver injury?
Seek prompt medical attention for jaundice, dark urine, or significant abdominal pain if you're taking any new medication or supplement - this needs urgent assessment rather than waiting to see if symptoms resolve.