User:Mr. Ibrahem/Benzathine benzylpenicillin

Benzathine benzylpenicillin, also known as benzathine penicillin G, is an antibiotic useful for the treatment of a number of bacterial infections. Specifically it is used to treat strep throat, diphtheria, syphilis, and yaws. It is also used to prevent rheumatic fever. It is given by injection into a muscle.

Side effects include allergic reactions including anaphylaxis, and pain at the site of injection. When used to treat syphilis a reaction known as Jarisch-Herxheimer may occur. It is not recommended in those with a history of penicillin allergy or those with syphilis involving the nervous system. Use during pregnancy is generally safe. It is in the penicillin and beta lactam class of medications and works via benzylpenicillin. The benzathine component slowly releases the penicillin making the combination long acting.

Benzathine benzylpenicillin was patented in 1950. It is on the World Health Organization's List of Essential Medicines. The wholesale cost in the developing world is about 0.27 to US$1.71 for a course of treatment. In the United States the medication costs 50 to US$100 for a dose as of 2015. In the United Kingdom it costs the NHS about 0.95 to 1.89 pounds a dose as of 2015.