Symphomycin is a macrolide antibiotic, its antibacterial spectrum is similar to erythromycin, with antibacterial activity against induced drug-resistant strains, and has good antibacterial effect against meningococcus, B. pertussis, Mycoplasma, Chlamydia, Legionella, and some anaerobes. Clinically, it is mostly used for infections caused by sensitive bacteria, and can also be used for staphylococcal infections resistant to penicillin and erythromycin. For example, acute pharyngitis, tonsillitis, otitis media, sinusitis caused by Streptococcus pyogenes infection; bronchitis, pneumonia caused by Mycoplasma pneumoniae; and skin and soft tissue infections. Generally adults, two tablets each time, three times a day, orally.