Penicillin is the first antibiotics discovered by Sir Alexander Flemming. The application for medicine is usually thought to begin from 1942.
Now the penicillin is a big family, which include penicillin G (intravenous use), penicillin V (oral use), procaine penicillin, and benzathine penicillin (intramuscular use). And some enhanced ones are available to fight agains a wider spectrum of pathogens. These enhances penicillins include the antistaphylococcal penicillins, aminopenicillins and the antipseudomonal penicillins, all derived from Penicillium fungi.
However, some people are allergic to penicillin, they should let the doctor know this before start a treatment. Furthermore, abuse use of penicillin or any antibiotics, would increase the risk of development of resistance in pathogens. Considered together, it would be important to use Penicillin G Test Kit to detect the prescence of penicillin. And now, the colloidal gold based immunoassay is always a good choice for rapid tests.