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。

S 38093 is a brain-penetrant antagonist/inverse agonist of H3 receptors.

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.

Ciproxifan maleate is a highly potent and selective histamin H3-receptor antagonist with IC50 of 9.2 nM, with low apparent affinity at other receptor subtypes.

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.

Nω-Hydroxy-nor-Arg-OH·2HCl是一种选择性、可逆的精氨酸酶 (arginase) 抑制剂，能够诱导缺氧条件下细胞的凋亡，具有抗白血病活性。该化合物还广泛用于研究内皮功能障碍、免疫抑制和代谢调节。

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].

Pheniramine maleate can acts as an antihistamine and vasoconstrictor.

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.

Clemastine fumarate is a selective antagonist of histamine H1 receptor with IC50 of 3 nM.

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.