Phenoxymethylpenicillin or penicillin V

Phenoxymethylpenicillin, also known as penicillin V, is an antibiotic useful for the treatment of a number of bacterial infections. Specifically it is used for
 the treatment of strep throat,
otitis media, and cellulitis.
It is also used to prevent rheumatic fever and to prevent infections follow removal of the spleen.
 It is given by mouth.[1]

Side effects include diarrhea,
nausea, and allergic reactions
including anaphylaxis.
It is not recommended in those
 with a history of penicillin
 allergy.[1] It is relatively
safe for use during pregnancy.
[2] It is in the penicillin and
beta lactam family of medications. It usually results in bacterial death.[3]

Phenoxymethylpenicillin was first made in 1948.[4] It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system.[5] It is available as a generic medication.[3] The wholesale cost in the developing world is about 0.05 to 0.96 USD per day.[6] In the United States a course of treatment costs less than 25 USD.