Q: What does Penicillin do?
A: In addition, "extended spectrum" penicillins have been developed in recent years that are active against an increased range of bacterial organisms. Because of the resistance of some bacteria to penicillin, a number of newer agents that prevent or limit bacterial resistance have also been created.
One commonly used example of such a drug is called Augmentin, which combines amoxicillin with a chemical called clavulanic acid. The newer penicillins appear to be safe for use during pregnancy, as well. Obviously, expectant and lactating mothers are susceptible to the possible side effects of any antibiotic, two common examples of which are allergic reactions and diarrhea. All penicillins are FDA category B drugs.