Penicillin, one of the most widely prescribed antibiotics, is also one of the most frequently reported medication allergies. The Centers for Disease Control and Prevention says 10% of people living in the U.S. report having a penicillin allergy. However, less than 1% are truly allergic. Dr. Nipunie Rajapakse, a pediatric infectious diseases physician with the Mayo Clinic Children's Center, says if your healthcare team can't prescribe the preferred antibiotic for your bacterial infection due to a