Betazole 2HCl是一种 H2 受体激动剂，能够刺激胃酸分泌，主要用于消化系统疾病的诊断和治疗。

H4R antagonist 3是一种组胺-4 受体 (H4R) 拮抗剂，EC₅₀ < 10 mM。该化合物可用于炎症、自身免疫性疾病、过敏反应以及眼部疾病的预防性研究，尤其适合于研究组胺介导的疾病机制。

Decloxizine is a histamine 1 receptor antagonist.

GSK189254A 是一种强效且选择性的组胺 H3 受体拮抗剂，人类和大鼠 H3 受体的 pKi 值分别为 9.59-9.90 和 8.51-9.17。

Tripelennamine HCl is an antagonist of H1-receptor that used as a psychoactive drug with antipruritic activity.

Niaprazine是一种组胺 H1 受体 (histamine H1-receptor) 拮抗剂，具有抗组胺和抗血清素活性，常用于睡眠障碍的研究，能够调控与神经传递相关的生理过程，适用于睡眠障碍及神经系统疾病的研究。

Roxatidine acetate HCl is a slective antagonist of histamin H2 receptor.

Emedastine is a potent, high affinity histamine H1-receptor-selective antagonist with Ki of 1.3 ±0.1 nM for H1-receptors while considerably weaker at H2- (Ki = 49,067 ± 11,113 nM) and H3-receptors (Ki = 12,430 ± 1,282 nM).

Chlorphenoxamine is an antihistamine and anticholinergic and can be used as antipruritic and antiparkinsonian agent.

Cimetidine sulfoxide (Cimetidine sulphoxide) is a sulfoxide metabolite of Cimetidine. Cimetidine is a histamine H2-receptor antagonist. Cimetidine has the potential for peptic ulcer disease and upper gastrointestinal haemorrhage treatment[1].

Triprolidine Hydrochloride is the first generation histamine H1 antagonist used in allergic rhinitis.

Mebhydrolin Napadisylate is an antihistamine that used for symptomatic relief of allergic symptoms.

Decloxizine 2HCl is a histamine 1 receptor antagonist.

Antazoline hydrochloride是一种第一代抗组胺药，具有抗胆碱能特性，常用于缓解鼻塞及作为眼药水治疗眼部过敏。

Betahistine 2HCl is histamine H3 receptor inhibitor with IC50 of 1.9 μM. It is an antivertigo drug.

Astemizole is a synthetic piperidinyl-benzimidazol derivative with antiallergic properties, Astemizole acts as a reversible competitive inhibitor of histamine H1 receptors, with less anticholinergic effects compared to related agents.

Tecastemizole是一种 Astemizole 的主要代谢物，作为有效且选择性的 H1 受体（H1 receptor）拮抗剂，具有抗炎活性，能够抑制过敏反应中的嗜酸性粒细胞募集，显示出在抗炎和抗过敏治疗中的潜力。

Tesmilifene fumarate是 H_1C 受体的拮抗剂，可广泛的增强化疗的细胞毒性，并保护正常细胞。

ST-1006是一种有效的组胺 H4 受体激动剂，pKi 为 7.94，具有抗炎特性，常用于免疫和炎症相关疾病的研究。

Antazoline是一种H1受体拮抗剂，能够减轻过敏反应并具有抗心律失常作用，适用于相关疾病的研究。