Metiamide is a histamine H2-receptor antagonist developed from another H2 antagonist, burimamide.

Sertindole, a neuroleptic, is one of the antipsychotic medications available, with a high affinity for dopamine D2, serotonin 5-HT2A, 5-HT2C, and α1-adrenergic receptors.

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].

Histamine is an organic nitrogenous compound involved in local immune responses as well as regulating physiological function in the gut and acting as a neurotransmitter.

L-Histidinol dihydrochloride is an endogenous metabolite.

Azomycin is a natural macrolide antimicrobial antibiotic against Gram-positive, Gram-negative bacteria and anaerobic bacteria, and also works as a hypoxia labeling agent.

Glycyl-L-Histidyl-L-Lysine acts as an anti-aging activator combined with its copper ions.