Most people are actually unfamiliar with clarithromycin tablets, but they are not unfamiliar with erythromycin. Erythromycin is the most widely used in hospital clinics and is the antibiotic that we come into contact with the most in our daily lives. Clarithromycin is a derivative of erythromycin, and its tablets, as well as granules, dispersible tablets, extended-release tablets, injections and dry suspensions are currently produced. Many of us may be particularly interested in knowing what this clarithromycin tablet has to offer, so let’s learn more about it today. One, clarithromycin tablets for macrolide antibiotics, Gram-positive bacteria such as Staphylococcus aureus, streptococcus, pneumococcus, etc. have inhibitory effect, on some Gram-negative bacteria such as Haemophilus influenzae, Bacillus pertussis, Neisseria gonorrhoeae, Legionella pneumophila and some anaerobic bacteria such as Bacteroides fragilis, Streptococcus digestiveis, Propionibacterium acnes, etc., in addition to mycoplasma also have inhibitory effect. Secondly, Clarithromycin tablets are characterized by similar antibacterial activity to erythromycin in vitro, but stronger antibacterial activity than erythromycin in vivo against some bacteria such as Staphylococcus aureus, Streptococcus, Haemophilus influenzae, etc. Third, Clarithromycin tablets are most widely used for the following infections: 1. Nasopharyngeal infections: tonsillitis, pharyngitis, paranasal sinusitis; 2. Lower whistle infections: including bronchitis, bacterial pneumonia, atypical pneumonia; 3. Skin infections, impetigo, dermatitis, folliculitis, boils and wound infections. Although Clarithromycin tablets are said to have a strong anti-infective ability, its adverse effects cannot be excluded. Its common adverse effects mainly include occasional nausea, heartburn, abdominal pain and diarrhea, headache. Transient elevation of transaminases, which can be recovered after stopping the drug. Therefore, if abnormalities occur during the use of the drug, it is important to discontinue the drug in a timely manner and seek medical advice to avoid the continued aggravation of its adverse effects.