Oxytetracycline,yellow crystalline power,is a product of the metabolism of Streptomyces rimosus is one of the family of tetracycline antibiotics;it is used chiefly in treating infections caused by streptococci,staphylococci,Gram-negative bacilli,rickettsiae,and certain protozoans viruses.Tetracyclines inhibit bacterial protein synthesis by binding to the 30S ribosomal subunit. Oxytetracycline acts as a inhibitor of a growth(bacteriostatic)rather than killer of the infectious agent(bacteriocidal) and is only effective against multiplying microorganisms