Hepatitis C drugs may have effects on the body, commonly used hepatitis C treatment drugs are sofosbuvir, gecarevir, etc. These drugs have certain adverse reactions. 1. Sofosbuvir: it has an inhibitory effect on hepatitis C virus and is used for the treatment of chronic hepatitis C virus infection; taking it may lead to arrhythmia, dizziness, nausea, insomnia, generalized weakness, loss of appetite and other adverse reactions. 2. Gecarevir: belongs to a kind of protease inhibitor, which can be used for the treatment of chronic hepatitis C; dizziness, headache, weakness, nausea and vomiting, diarrhea and other adverse reactions may occur after taking it. Taking hepatitis C drugs may have certain side effects, need to be used under the guidance of a doctor.