KSK68 是一种高亲和力双重 sigma-1 和 组胺 H3 受体拮抗剂，对 H3 受体、sigma-1、sigma-2 受体的 Ki 分别为 7.7 nM, 3.6 nM、22.4 nM。KSK68 对其他组胺受体亚型的亲和力可以忽略不计。KSK68 可用于伤害性疼痛和神经性疼痛的研究。

Dalcotidine (KU 1257) is a novel histamine H2 receptor antagonist with histamine H9 receptor antagonistic activity and antisecretory effects.The Ki value for binding to guinea pig cerebral cortex was 0.040 The KB value for antagonism of histamine-induced positive chronotropic responses in the right atrium of isolate guinea pigs was 0.041.Dalcotidine improves the quality of ulcer healing, and may contribute to a reduction in ulcer recurrence and relapse rates.

Tesmifene fumarate (DPPE fumarate) 是一种 H1C 受体拮抗剂。