Which pregnancy risk category includes antibiotics (penicillins, cephalosporins) generally considered safe to use during pregnancy?

Correct answer: B. Category B

• A. Category A drugs are very few and not where these antibiotics sit.
• B. Correct. Penicillins, cephalosporins, clindamycin, and erythromycin are Category B—no demonstrated fetal risk—and are preferred in pregnancy.
• C. Category C agents have possible risk and are used only when benefit outweighs risk.
• D. Category D agents have evidence of fetal risk (e.g., tetracyclines for teeth).