Clarithromycin extended-release tablets are usually taken with a meal, and some patients may take them half an hour after a meal. Clarithromycin extended-release tablets is a kind of macrolide drugs, mainly used for the treatment of microbial infections sensitive to clarithromycin, usually taken in the meal, but some patients may take the drug to the gastrointestinal tract of the irritation is relatively large, easy to cause uncomfortable symptoms, such as gastric acid, gastric pain, etc., can be taken half an hour after the meal. When taking clarithromycin extended-release tablets, pay attention to the macrolide antibiotic drug allergy is prohibited, the drug should not be taken with astemizole, terfenadine, cisapride, pimozide and other drugs. Clarithromycin extended-release tablets must be taken by the doctor’s guidance, the patient can not self-medication.