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CION Cancer Clinics
Medicines to avoid when you have cirrhosis | CION Cancer Clinics
With cirrhosis, the medicines most likely to cause harm are anti-inflammatory painkillers such as ibuprofen and diclofenac, sleeping tablets and sedatives, and herbal liver tonics. Paracetamol is often still allowed, but at an amount your doctor sets. This page explains why a scarred liver handles medicines differently, which groups need care, and how to check any new tablet safely. At CION Cancer Clinics, our specialists help you understand your own risk and plan regular liver checks that fit it.
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Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed October 2026, next review due October 2027
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On this page
- Which medicines should I avoid if I have cirrhosis?
- What kinds of medicine can harm a cirrhotic liver?
- How do I check whether a medicine is safe for my liver?
- What medicines are usually safer with cirrhosis?
- What people often believe about medicines and the liver
- What this page cannot tell you
- Common questions about medicines and cirrhosis
The short answer
Which medicines should I avoid if I have cirrhosis?
The medicines that most often cause trouble in cirrhosis are anti-inflammatory painkillers, sleeping tablets and sedatives, and herbal or "liver detox" products. Many other medicines are fine, but the safe amount may be lower than usual, so check every new tablet with your doctor first.
Why a scarred liver changes the rules
A healthy liver breaks down most medicines and clears them from the body. A cirrhotic liver does this more slowly, so a normal amount can build up and act like a larger one. Cirrhosis also strains the kidneys, raises the pressure in veins around the liver and makes the brain more sensitive. A medicine that is harmless for your neighbour can tip you into kidney trouble, bleeding or confusion.
Who this page is for
This page is for people with cirrhosis, with or without primary liver cancer, and for the family member who buys their medicines. If cancer has spread to your liver from another organ and you do not have cirrhosis, the cautions are usually milder. Ask your oncologist which applies to you.
Never stop a prescribed medicine because of this page. Ask first. Stopping some tablets suddenly is more dangerous than taking them.The groups to be careful with
What kinds of medicine can harm a cirrhotic liver?
These are groups, not a complete list. Your doctor may still prescribe one of them when the benefit is clear.
Anti-inflammatory painkillers
Ibuprofen, diclofenac, naproxen and similar tablets, gels and injections are usually avoided. They can damage the kidneys, make fluid build up and raise the risk of bleeding from varices. Aspirin carries a similar bleeding risk.
- Often sold for back pain, fever and body ache
- Sometimes hidden in cold and pain combinations
Sleeping tablets and sedatives
Diazepam, alprazolam and similar calming tablets stay in the body longer in cirrhosis. They can trigger hepatic encephalopathy, the confusion and drowsiness that happen when the liver cannot clear toxins.
Strong painkillers
Morphine and similar medicines are still used, carefully, when pain needs them. The amount is usually lower and constipation is treated early, because constipation can also bring on confusion.
Herbal tonics and supplements
Herb-induced liver injury is most dangerous in a liver that is already scarred. Products sold as liver protectors or detox are not exempt. Some contain hidden ingredients.
Some blood pressure and kidney medicines
When there is ascites (fluid in the abdomen), some blood pressure tablets can drop the pressure too far and harm the kidneys. Your doctor may review them.
Certain antibiotics and TB medicines
Some antibiotics are hard on the kidneys, and several TB medicines can damage the liver. They are still given when needed, with closer blood tests. See anti-TB medicines and the liver.
Not sure whether this applies to you?
Ask an oncologistBefore you take anything new
How do I check whether a medicine is safe for my liver?
Keep one written list
Write down every tablet, injection, syrup, powder and herbal product, with who prescribed it. Include things bought without a prescription. Photographs of the strips work too.
Say "I have cirrhosis" every time
Tell every doctor, dentist and pharmacist, even for a small problem. A doctor treating a toothache or a cough may not know about your liver unless you say so.
Ask one clear question
Ask "Is this safe with my liver, and is the amount adjusted for it?" If the answer is unclear, wait and ask your oncologist or hepatologist before starting.
Bring the list to every visit
Your CION oncologist reviews it before each cancer treatment, because cancer medicines and everyday medicines can interact.
What is often used instead
What medicines are usually safer with cirrhosis?
- Paracetamol
- Often still the first choice for pain and fever, at a lower total amount your doctor sets. Read why paracetamol is often allowed.
- Lactulose
- A syrup that keeps the bowels moving and helps prevent confusion. It is a treatment, so do not stop it because stools are loose.
- Rifaximin
- An antibiotic that stays in the gut and is used to prevent encephalopathy coming back.
- Antivirals for hepatitis B
- Tenofovir or entecavir keep hepatitis B controlled. They protect the liver and must not be stopped without the prescribing doctor.
- Statins
- Cholesterol tablets are often continued in compensated cirrhosis. Your doctor decides. See statins and liver enzymes.
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Go to hospital today if a new medicine is followed by these
New confusion, unusual sleepiness or slurred speech, especially after a sleeping tablet or strong painkiller. Vomiting blood or black, tarry stools after a painkiller. Passing very little urine. Sudden yellowing of the eyes with a fever. Go to the nearest emergency department today, take the medicine strip with you, and say the person has cirrhosis.
Commonly believed
What people often believe about medicines and the liver
"Paracetamol destroys the liver, so ibuprofen is safer."
For most people with cirrhosis it is the other way round. Paracetamol at an adjusted amount is usually preferred, while anti-inflammatory painkillers can harm the kidneys and cause bleeding. See painkillers and a damaged liver.
"Herbal medicines are natural, so they cannot hurt the liver."
Natural does not mean safe for a scarred liver. Some herbal products cause liver injury, and their contents are not always what the label says. Tell your oncologist what you take, without worrying about being judged.
"A liver tonic will protect me while I take strong medicines."
No tonic has been shown to protect a cirrhotic liver from medicines. Careful choice of medicine and amount, plus regular blood tests, is what protects it.
"Lactulose gives loose motions, so I should stop it."
Loose, soft stools are the point. Lactulose clears toxins that cause confusion. If stools are too frequent, ask your doctor to adjust it rather than stopping.
Being straight with you
What this page cannot tell you
It cannot tell you whether a particular medicine is safe for you. That depends on how well your liver and kidneys are working, whether there is fluid or confusion, and what else you take. Only a doctor who has seen your recent blood results can judge that.
It is not a complete list
Thousands of medicines exist and new ones arrive every year. A medicine missing from this page is not automatically safe. Cancer medicines are a separate question, adjusted by your oncologist to your liver function. The page on chemotherapy with liver disease explains how.
Who this does not apply to
If you have liver cancer that spread from another organ and your liver is otherwise healthy, most of these cautions are less strict. If you have advanced cirrhosis, the cautions are stricter, and some medicines that suit early cirrhosis may no longer suit you.
When in doubt, wait and ask. A short delay is rarely harmful.Questions we are asked
Common questions about medicines and cirrhosis
Can I take paracetamol if I have cirrhosis?
Usually yes, and it is often the preferred painkiller. The safe daily amount may be lower than the packet says, so ask your doctor to set it for you. Check cold and flu remedies too, because many already contain paracetamol and doses add up without you noticing.
Is ibuprofen or diclofenac safe with cirrhosis?
They are usually avoided. In cirrhosis these painkillers can damage the kidneys, make fluid collect in the abdomen and raise the risk of bleeding from varices. This includes gels and injections given at local clinics. Ask your doctor for an alternative before taking them.
Can I take a sleeping tablet if I cannot sleep?
Ask first. Poor sleep, or sleeping by day and waking at night, can itself be an early sign of hepatic encephalopathy. A sleeping tablet can make that confusion worse. Your doctor may treat the cause instead, or choose something gentler.
Are Ayurvedic or herbal liver medicines safe?
There is no good evidence that any of them repair a cirrhotic liver, and some cause liver injury. The risk is highest when the liver is already scarred. If you take one, tell your oncologist so they can watch your blood tests. You will not be judged for it.
Will my cancer medicines be adjusted for cirrhosis?
Yes. Your oncologist checks liver function before each treatment and chooses medicines and amounts the liver can handle. Some drugs, such as bevacizumab, need extra checks for varices first. Read bevacizumab and bleeding risk.
Should I stop my hepatitis B tablets during cancer treatment?
No. Hepatitis B is controlled, not removed, and stopping the tablets can let the virus flare and damage the liver. Cancer treatment can make a flare more likely. Only the doctor who prescribed them should change them.
Are vitamins and protein powders safe?
Many are, but high-dose vitamin A and some bodybuilding or weight-loss supplements can harm the liver. Ordinary nutrition drinks are often useful. Show the tin or packet to your doctor or dietitian before starting, so they can check what is inside.
What should I tell a new doctor or pharmacist?
Say that you have cirrhosis, and liver cancer if you do, and show your medicine list. Ask whether the new medicine is safe with your liver and whether the amount is adjusted. Keeping one up to date list on your phone makes this easy for the whole family.
Your Specialists
Meet CION's liver cancer specialists. Bring your scan reports and liver blood tests.
Our medical and surgical oncologists plan liver cancer care together, weighing the tumour and how well your liver works before choosing surgery, a liver-directed procedure or medicines.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
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Sources
- NHS — Cirrhosis
- Liver UK (formerly British Liver Trust) — Cirrhosis
- Merck Manual Consumer Version — Cirrhosis of the Liver
- MedlinePlus — Herbal Medicine
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Paracetamol, painkillers and a damaged liverThe pain question in more detailLooking after a cirrhotic liver while you have cancerEverything else that protects the liver during treatmentAspirin, painkillers and bleeding risk in liver diseaseWhy some tablets raise the risk of variceal bleedingChemotherapy with liver diseaseHow cancer medicines are adjusted for a weak liver
Talk to us
Not sure whether your tablets are safe for your liver?
Bring every medicine, tonic and supplement you take, in a bag or as photographs, and an oncologist will go through them with you. Nobody will judge what is in the bag. One helpline serves every CION centre.