title: Effects of olopatadine hydrochloride, a histamine h(1) receptor antagonist, on histamine-induced skin responses.
abstract: Effects of olopatadine hydrochloride, a histamine H(1) receptor antagonist, on histamine-induced skin responses were evaluated in 10 healthy subjects in comparison with placebo, fexofenadine hydrochloride, and bepotastine besilate. Olopatadine significantly suppressed histamine-induced wheal, flare, and itch, starting 30 minutes after oral administration. Olopatadine was more effective than fexofenadine and bepotastine. None of the drugs studied impaired performance of word processing tasks. These results suggest that olopatadine can suppress skin symptoms caused by histamine soon after administration.
authors.affiliation: Department of Dermatology, Kurume University School of Medicine and Kurume University Institute of Cutaneous Cell Biology, 67 Asahimachi, Kurume, Fukuoka 830-0011, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Hashimoto
authors.forename: Norito
authors.initials: N
authors.lastname: Ishii
authors.forename: Takahiro
authors.initials: T
authors.lastname: Hamada
authors.forename: Teruki
authors.initials: T
authors.lastname: Dainichi
authors.forename: Tadashi
authors.initials: T
authors.lastname: Karashima
authors.forename: Takekuni
authors.initials: T
authors.lastname: Nakama
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Yasumoto