Clarithromycin can be taken on an empty stomach. The instructions do not specifically require the time of medication, patients please according to their own situation, under the guidance of the doctor reasonable use of medication. Oral dosage forms of clarithromycin include tablets, granules, capsules dry suspension. Clarithromycin is mainly used for the treatment of infections caused by Clarithromycin-sensitive bacteria, such as nasopharyngeal infections, lower respiratory tract infections, skin and soft tissue infections, acute otitis media, Mycoplasma pneumoniae pneumonia, urethritis and cervicitis caused by Chlamydia trachomatis, and Legionella infections. It can also be used in combination with other drugs to treat Mycobacterium avium infections and Helicobacter pylori infections. Adverse reactions to clarithromycin include symptoms such as oral odor, abdominal pain and diarrhea, nausea and vomiting, headache, abnormal taste, temporary elevation of serum aminotransferase, allergic reactions, hepatotoxicity, pseudomembranous colitis, anxiety, dizziness, and sleep disturbances. Clarithromycin is prohibited in patients allergic to clarithromycin or macrolides, prohibited in pregnant and lactating women, prohibited in patients with severe hepatic impairment, water-electrolyte disorders, cardiac arrhythmia, acute heart failure, caution in patients with hepatic impairment, moderate severe renal impairment, prohibited from being used in combination with astemizole, cisapride, pipemidocin and terfenadine. If you need to use Clarithromycin, please consult a professional doctor, follow the doctor’s instructions to standardize the treatment, not blindly use the drug.