Ebastine (Standard) is the standard substance of Ebastine, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Ebastine (Kestine) (trade names Evastin, Kestine, Ebastel, Aleva) is a non-sedating H1 antihistamine. It does not penetrate the blood-brain barrier and thus allows an effective block of the H1 receptor in peripheral tissue without a central side effect, i. e not causing sedation or drowsiness.