Clarithromycin and cephalosporin antibiotics belong to different antimicrobial drugs, their role in different flora, applicable to different diseases, there is no which drug is more powerful statement. 1. Clarithromycin is a macrolide antibiotic, which plays an antibacterial role by inhibiting the synthesis of bacterial proteins, and can treat bronchitis, pneumonia, sinusitis, pharyngitis, folliculitis, salpingitis, and odontogenic infections caused by sensitive bacteria. Clarithromycin is available in tablet and capsule preparations, etc. Its adverse reactions may include abdominal pain and diarrhea, nausea and vomiting, abnormal taste, dizziness and insomnia. When Clarithromycin is used in combination with carbamazepine, it will increase their blood concentration, so you should consult your doctor or pharmacist before use. It is forbidden to use in the following cases: allergy to macrolides; pregnant women, lactating women; severe water-electrolyte disorders, hepatic impairment; cardiac arrhythmia, bradycardia, ischemic cardiomyopathy and other heart diseases. Use with caution in patients with hepatic impairment and moderate-to-severe renal impairment. 2. Cephalosporin antibiotics can be used for bronchitis, pneumonia, pyelonephritis, uncomplicated skin and skin soft tissue infections, complicated intra-abdominal infections caused by sensitive bacteria. Different cephalosporin antibiotics have different adverse reactions, contraindications and precautions. For example, cefixime dispersible tablets can cause diarrhea, rash, shock, etc., while cefadroxil tablets cause vomiting, tinnitus, convulsions and so on. All cephalosporin antibiotics are contraindicated for those who are allergic to one of them. If you need to use the above drugs, please consult a doctor or pharmacist, strictly follow the doctor’s instructions to take medication, do not self-medication.