Can I take Benadryl for a rash/itch just begun?. I am 91 years old, take Amiodorone, .81 aspirin and garlic oil for high blood pressure and have a pacemaker , The only drug I am allergic to is Sulfa.Also have had two by pass surgeries, have type 2 diabetes for which I take one shot of 6 units of Levemir daily. Thanks,William