Ans: We all know that the penicillin source was Penicillium notatum. However, with the help of the source, there are many different types of natural as well as synthetic variations of penicillin that are currently being created in the best way. We are going to name some of these types of penicillin options right here. It is important to note that all of these penicillin options tend to have different characteristics and hence their effectiveness on the patient will also be very different. For example, Penicillin G and Penicillin V tend to be the natural option while there are other synthetic options such as Ampicillin.