Clarinova-250 Tablet is used to treat a wide range of bacterial infections. It contains Clarithromycin (antibiotic). It inhibits the protein synthesis process required for bacterial cell growth. As a result, bacterial cells are not able to reproduce and grow. Thus, it helps prevent infections. Common side effects of Clarinova-250 Tablet are feeling sick (nausea), diarrhoea and being sick (vomiting), loss of appetite, bloating and indigestion, headaches and difficulty sleeping.