Are you really allergic to penicillin?

Multiple packets of penicillin tabs rubberbanded in a stack

The Medicine Cabinet: Ask the Harvard Experts A: Allergies to penicillin are the most commonly reported medication allergy. This can be a real problem. If she is truly allergic to penicillin, she does need to avoid penicillin, amoxicillin and related compounds. Now, this would be just an unavoidable reality of life for penicillin-allergic people, if […]

Cause of canker sores unknown, but simple measures can provide relief

Young man with canker sore touching his mouth and grimacing in pain

The Medicine Cabinet: Ask the Harvard Experts  Q: I get canker sores about two to three times per year. Generally there is just one, but sometimes I have a couple at the same time. What causes them? Can they be prevented? A: A canker sore is a painful ulcers on the inside of the cheek […]