This product is a narrow-spectrum antibiotic with similar effect to erythromycin. It has a good effect on Gram-positive cocci, especially on anaerobic bacteria, Staphylococcus aureus and pneumococci. Its mechanism of action is similar to erythromycin and belongs to bacteriostatic agent. It mainly inhibits the synthesis of bacterial cell protein. Clinically, it is mainly used for various infections caused by sensitive bacteria, such as pneumonia, meningitis, endocarditis, cellulitis, tonsillitis, erysipelas, furuncle and urinary system infection. Because this product can enter bone tissue and has special affinity with bone, it is especially suitable for infection caused by anaerobic bacteria and Staphylococcus aureus osteomyelitis.