antihistamines are safe to take while using inderal; there are not any known interactions. however inderal does make some people drowsy and certain over-the-counter antihistamines can make you drowsy as well. so i would suggest if you buy an antihistamine that does not cause drowsiness such as loratadine. your pharmacist can help you find one that is best for you.
can inderal and an antihistamine be taken together?