A-Mycin

Erythromycin

Erythromycin is a macrolide antibiotic, which may be bactericidal or bacteriostatic. Erythromycin binds to the 50S ribosomal subunit of susceptible bacteria and suppresses protein synthesis without affecting nucleic acid synthesis. 
A-Mycin (Erythromycin) is usually active against following organisms: Gram positive: Staphylococcus aureus, Streptococcus Pyogenes, S. pneumoniae, Corynebacterium diphtheriae, C. minutissimum. Gram-negative: Moraxella catarrhalis, Neisseria gonorrhoeae, Legionella pneumophila, Bordetella pertussis. Mycoplasma: Mycoplasma pneumoniae, Ureoplasma urealyticum. Others: Chlamydia trachomatis, Entamoeba histolytica, Treponema pallidum, Listeria monocytogenes.