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The primary over-the-counter painkillers contain acetaminophen, ibuprofen or aspirin. All three of these have some impact on the liver, and can cause liver damage when taken in excess. While occasional, restricted use may be safe for those with Hepatitis C, a doctor will choose the drug based on which is least likely to adversely affect you.
1. Acetaminophen – (Tylenol, Anacin 3, Panadol, Paracetamol and others) is a common, mild to moderate pain reliever and fever reducer. A liver afflicted with Hepatitis C may not be able to metabolize this drug. High doses of acetaminophen can cause liver injury, even to a healthy liver. In limited dosages, a physician will generally only suggest this class of analgesic to a person whose hepatic metabolism is fully functioning.
2. Ibuprofen – (Motrin, Advil, Nuprin and others) reduces high body temperature, is an anti-inflammatory and inhibits normal platelet function. A non-steroidal anti-inflammatory drug (NSAID), ibuprofen can cause gastrointestinal upset and bleeding. Those at risk of portal hypertension are already at risk for gastrointestinal bleeding, intensifying this risk. Studies have demonstrated that at certain dosages, ibuprofen can stress the liver and elevate liver enzymes in people with Hepatitis C. Ibuprofen must be used with extreme caution in the later stages of liver disease and for those on interferon therapy.
3. Aspirin – (Bayer, Anacin, Excedrin and others) reduces fever, relieves pain, and acts as an anti-inflammatory and blood thinner. In addition to influencing liver test results, aspirin’s effect on blood platelets temporarily limits the clotting process and prolongs bleeding. In chronic liver disease where the body’s production of clotting factors is naturally decreased, aspirin can increase the risk of bleeding. Although there is no actual drug interaction between aspirin and the drugs used in interferon therapy, both can disrupt blood clotting, which must be monitored if used together. When taken in high doses (more than 2,000 mg per day) aspirin can cause liver injury.