Penicillin

It is an antibiotic that belongs to the beta-lactam group. It is widely used on farms and acts by killing certain kinds of bacteria. Penicillin G or benzylpenicillin, synthesized by fungi of the genus Penicillium, was the first antibiotic widely used in medicine and was discovered by Alexander Fleming in 1928.

Due to the emergence of resistance, antibiotics have been modified, creating new ones such as benzylpenicillin, phenoxymethylpenicillin or ampicillin with different spectra of action.