I know that if I take any antihistamines, I have to take the
non drowsy ones, as the others make me actually jittery and not
drowsy. Also, over here, most of the OTC sleep aids have the same ingredient in them as the drowsy type antihistamines. That's annoying, as a sleep aid that's OTC makes me jittery. Oh well. But what other reaction are you having other than the swelling and itching of your skin?