Discussions that mention zyrtec

Allergies board


For most people Zyrtec works really well but you have to understand how it's different from Benadryl. Benadryl is great because it is fact acting and very powerful but only lasts for 4-6 hours and tends to make people very drowsy.

Zyrtec works for 24 hours at a time but tends to work better if you take it every day. You should also check the dosage on the Zyrtec you're taking - the normal daily does for adults is 10 mg, but some of the chewables are only half that dose (so you may not be getting a full dose).

There are generic versions of Zyrtec available (Costco sells one called Allertec that contains Cetirizine, the active ingredient in Zyrtec, and only costs $15.00 for 300 tablets).