Liver Cirrhosis:
Medicines That Spare the Liver — and Those That Harm It

1. What is liver cirrhosis?

Liver cirrhosis is not a sudden event but the end point of damage that has gone on for years. When liver tissue is injured over a long period — by alcohol, fat, viruses or an autoimmune reaction — the body repairs it with connective tissue. Bit by bit, working liver cells become scar tissue.^¹

Almost every complaint follows from that. The loss of function means that proteins and clotting factors are missing and breakdown products such as bilirubin or ammonia build up. The backed-up blood flow (portal hypertension) drives blood into bypass routes through thin-walled veins, among them those in the oesophagus; fluid leaks into the abdominal cavity.^¹,²

2. Causes

Knowing the cause is not an academic exercise — almost the whole of the treatment follows from it.

• Alcohol — the commonest cause in Germany. What counts is the amount and the duration, not the kind of drink; for the same amount, women develop liver damage earlier on average.
• Fatty liver disease — worldwide increasingly the commonest cause, usually together with excess weight, type 2 diabetes and a disorder of the blood lipids. Silent fatty change can lead, by way of inflammation, to scarring; more in the article on fatty liver.
• Chronic viral hepatitis B and C — often unnoticed for decades; hepatitis C can usually be cured today, hepatitis B kept well under control.
• Autoimmune and cholestatic conditions — autoimmune hepatitis, biliary or sclerosing cholangitis.
• Metabolic conditions — haemochromatosis, Wilson's disease, alpha-1 antitrypsin deficiency.
• Medicines and toxins — rarer, but relevant: taking too much over a long period, or herbal preparations with the potential to damage the liver.

Often more than one cause comes together — alcohol plus fatty liver plus excess weight, say. The factors do not merely add up, they reinforce one another.

3. Compensated or decompensated

This distinction is the most important one in the whole subject, because it determines the outlook, the treatment and the urgency.^¹,³

The compensated phase can last many years — and that is exactly where the trap lies: because nothing hurts, cirrhosis is often picked up as an incidental finding, on an ultrasound done for another reason or in a routine blood test. Anyone caught at this stage has the greatest leverage: every measure that delays the move into decompensation buys time. Scoring systems such as Child-Pugh and the MELD score are used to judge how severe the disease is.

4. Symptoms and warning signs

The early signs are so non-specific that they are almost always put down to something else: persistent tiredness, a drop in performance, loss of appetite, pressure in the upper right abdomen, itching. Later, visible clues are added — reddened palms, spidery markings of the vessels, bruises for no reason.^²,³

With encephalopathy there is one point that relatives often notice first: the early stages do not show themselves as obvious confusion but as slowed thinking, trouble finding words, a reversed sleep rhythm or mistakes at the wheel. That belongs on the table — it can be treated.

5. Diagnosis: liver values, ultrasound, elastography

• History: naming your alcohol consumption honestly, previous conditions, hepatitis risks and the complete list of your medicines.
• Blood test: liver enzymes (AST, ALT, GGT), bilirubin, albumin, clotting, platelets, kidney values, sodium.
• Ultrasound: judges the size, surface and structure of the liver, the size of the spleen, the portal vein and free fluid — usually the first step, and often a telling one already.
• Elastography (FibroScan): measures the stiffness of the liver tissue painlessly and estimates the degree of scarring — a standard method that saves many biopsies.
• Going further: hepatitis serology, autoimmune and metabolic testing, a gastroscopy, rarely a liver biopsy.
• Follow-up: regular ultrasound for the early detection of liver cancer, as a rule every six months.

6. Treatment: what influences the course

There is no medicine that dissolves scar tissue. What works is a sober bundle: remove the cause, treat complications early and avoid everything that puts extra strain on the liver. The decisions are made by your treating practice together with you.^¹

7. Medicines: sparing or harming

The liver is the central organ for breaking down most drugs. Once it is scarred, medicines are broken down more slowly, work more strongly and for longer, and part of the blood bypasses the liver altogether. At the same time clotting, the kidneys and the brain's metabolism are more sensitive. The very tablet that was unproblematic before can now be a real risk.^¹,⁴

The most important rule behind all this is banal, and it is broken all the time: say at every contact with a doctor or a pharmacy that you have liver cirrhosis. Many doses are then adjusted, and some substances avoided altogether. Anyone who does not mention it gets standard doses — and those can be too high. More in medications in kidney and liver impairment.

8. Complications and prevention

Varicose veins in the oesophagus

The pressure in the portal system widens thin-walled veins in the oesophagus. If they tear, massive bleeding follows — which is why a gastroscopy is done to look for them once cirrhosis is confirmed. Where the varices are relevant, non-selective beta blockers or band ligation come into question. Vomiting blood or tarry stools are always an emergency, with a call to 112.^¹

Fluid in the abdomen (ascites)

Fluid collects in the abdominal cavity, often together with oedema in the legs. Treatment is with less salt and with water tablets; where the amounts are large, the fluid is drained with a needle. Weighing yourself daily at the same time is the most telling thing you can do yourself — the weight curve shows faster than any feeling whether the dose is right. A fever and abdominal pain with ascites need assessing immediately.

Hepatic encephalopathy

If the liver no longer detoxifies ammonia sufficiently, brain function suffers — from mild slowing to coma. Treatment is with lactulose, often with a poorly absorbed antibiotic added; triggers such as infections, constipation, bleeding or sedating medicines are removed. Important: during this phase you must not drive.

Kidneys and vaccination

The liver and the kidneys are closely linked — a drop in blood pressure, fluid loss and infections worsen kidney function quickly. That is why kidney values belong among the checks, and why NSAIDs are particularly unfavourable here; the parallels are described in the article on chronic kidney disease. Infections are at the same time a frequent trigger of decompensation. For chronic liver disease, Germany's standing committee on vaccination (STIKO) therefore recommends consistent vaccination cover, above all against hepatitis A and B, flu, pneumococci and COVID-19 — see vaccinations for adults.^⁵

9. Nutrition: the protein myth

One outdated piece of advice holds on stubbornly here: "with liver damage you have to cut down on protein". That used to be the standard in encephalopathy — and on current knowledge it is wrong, and even harmful. People with cirrhosis often have a raised protein requirement and lose muscle mass quickly; and it is precisely the loss of muscle that worsens the outlook and the encephalopathy, because muscles help to break ammonia down.^¹,⁴

• Do not cut protein out — the amount is set by your practice or a dietitian. Plant and dairy sources are often better tolerated.
• A late-night snack — a carbohydrate-rich snack in the evening shortens the overnight fast and spares the body's own protein reserves.
• Cut down on salt where there is fluid in the abdomen — above all the hidden sources: bread, sausage, cheese, ready meals, stock. Adding salt at the table is the smaller part of the problem.
• Exercise to protect your muscles — training adapted to you counters the loss of muscle; agree how much with your practice, particularly where there are varices.

10. Everyday life with liver cirrhosis

• Weigh yourself daily: in the morning, on the same scales. A rapid rise over a few days is an alarm signal for water retention — ring your practice.
• Always carry your medication list: with every substance, every dose and the note "liver cirrhosis" — in an unplanned hospital contact it is the single most important piece of information.
• Ask before every new prescription: "Is this all right with liver cirrhosis, does the dose have to be adjusted?" — at the dentist and at the pharmacy too.
• Do not take over-the-counter painkillers on spec: combination cold remedies often contain paracetamol, which adds up unnoticed.
• Bring your relatives in: the early signs of encephalopathy are often noticed first by the people around you.

To put it in perspective, without glossing over it and without painting it black: liver cirrhosis is a serious, chronic illness. How it runs depends strongly on whether the cause is removed and whether complications are treated early. You have more influence over that in everyday life than it feels like at first.

Treatment that spares the liver — with brite

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