benadryl is safe to take while using propranolol. there are not any dangerous interactions. however propranolol does make some people drowsy. and benadryl can make you drowsy as well. i would suggest you get an antihistamine that does not cause drowsiness. ask your pharmacist. he or she can help you find one that is best for you.
can i take benadryl while taking propranolol 20 mg?