Etoloxamine is an antihistamine.

Minocromil was studied as a histamine receptor antagonist for the treatment of asthma. However, further development of the drug was discontinued.

Cycliramine is a substituted piperidine derivative discovered by Schering Corp. The drug is claimed to have antihistamine, antispasmodic, antiacetylcholine and analgesic activity.

Altoqualine (458L) is a derivative of benzylisoquinoline, it inhibited kidney histidine decarboxylase and decreased the passive anaphylactic bronchospasm in guinea pigs. Altoqualine is an antihistamine and antiallergic agent.

Quisultazine is a phenothiazine derivative patented by MARPHA Societe d'Etude et d'Exploitation de Marques as pentagastrin antagonist. In preclinical studies, Quisultazine weakly inhibited pentagastrin-stimulated gastric secretion but was a powerful inhibitor of nocturnal gastric secretion. Quisultazine possesses a very weak affinity to muscarinic receptors in vitro and in vivo. It has negligible anticholinergic properties in rats and mice at the peripheral level but no effect at the central level.

Vapitadine (R129160; Hivenyl™) is an antihistamine that Barrier Therapeutics is developing as a treatment for allergic reactions of the skin, such as those associated with hives and for the itch associated with atopic dermatitis. Vapitadine is a new selective, non-sedative H1antihistamine. In several in vitro and in vivo pharmacological models, vapitadine is at least as potent as cetirizine (Zyrtec®) and does not penetrate the blood-brain barrier. An advantage of vapitadine over other antihistamines may be the absence of the sedation, even at high doses. Vapitadine had been in phase II clinical trials for the treatment of patients with atopic dermatitis. However, no development has been reported.

LAMTIDINE is an irreversible and specific gastric histamine H2-receptor antagonist.

Clobenzepam (tarpane) is a drug exhibiting antihistaminic properties.

There is no information about biological and medical application of dorastine . It’s known, that compound possesses antihistamine properties and can be obtained from 4-chloroaniline.

Pirdonium is an antihistamine agent. It is the hydrophilic Histamine H1 receptor antagonist.