90% of reported penicillin allergies are false, research reveals

Vintage 1955 Vials of Pfizer Penicillin (Walter Cicchetti / Shutterstock.com)

Nine out of ten people who believe they're allergic to penicillin actually aren't, and this widespread misunderstanding has serious healthcare implications.

Research shows that while 10-20% of Americans report a penicillin allergy, fewer than 1% truly have one, according to Eliz…