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Penicillin G benzathine is used in the treatment of different types of severe infections, including strep infections, rheumatic fever (non-contagious fever marked by inflammation and pain in the joints) and syphilis.

How it works

Penicillin G benzathine belongs to the class of drugs called penicillin antibiotics. It works by blocking the formation of the bacterial cell wall and thereby stopping the growth and spread of bacteria.

Common side effects

Pain, Swelling, Diarrhoea, Injection site bleeding


Expert advice

• Exercise caution while taking benzathine penicillin G if you are suffering from diarrhea or stomach infection.
• Avoid direct exposure to sunlight as it may cause sensitivity to skin.
• Do not drive or operate machinery while taking benzathine penicillin G as it may cause dizziness.
• Patients who are allergic to penicillins, cephalosporins or any of its ingredients should not take benzathine penicillin G.

Content on this page was last updated on 30 September, 2016, by Dr. Varun Gupta (MD Pharmacology)