If you have a severe reaction to a medication stop it immediately and call your (or another) doctor to get emergency management and replacement medication.
Once you are diagnosed with an allergy, wear a medic-alert bracelet and inform all family members, caregivers, pharmacists and doctors about it!
Medic alert pic (picture)
You and your pharmacist should check the ingredients of generic and over-the-counter medications. You may need to avoid drugs in the same chemical group. To help you, get your doctor to write down a full list of medication to avoid.