Effects of Olopatadine Hydrochloride, a Histamine Receptor Antagonist, on Histamine-Induced Skin Responses
Figure 2
Inhibitory effects of anti-histamines on VAS values of histamine-induced itching sensation after histamine iontophoresis ( = 10). Results are presented as mean ± SE. P < .05, P < .01, and P < .001 (olopatadine versus placebo); P < .05, P < .01 (olopatadine versus fexofenadine).