Violation

All of the following are H1-receptor blockers except one. Which one is the exception?

Cimetidine (Tagamet)

Diphenhydramine HCL (Benadryl)

Chlorpheniramine maleate (Chlor-Trimeton)

Loratadine (Claritin)

Desloratadine (Clarinex)

Please describe the matter of abuse