Therapeutic Class

Drugs

Comments

Antihistamines

cetirizine (Zyrtec)

Reactions have been seen

both with topical and

systemic admin- istration

of antihistamines.

cyproheptadine

(Periactin)

diphenhydramine

(Benadryl)

loratadine (Claritin)

promethazine

(Phenergan)