Explore: Histamine H1 Antagonists

H1 antagonists, also called H1 blockers, are a class of medications that block the action of histamine at the H1 receptor, helping to relieve allergic

receptor antagonists or inverse agonists. Normally, histamine binds to the H1 receptor and heightens the receptor's activity; the receptor antagonists work

receptor. Antihistamine – Histamine receptor antagonists H1-receptor antagonist Histamine H2-receptor Histamine H3-receptor Histamine H4-receptor GRCh38: Ensembl

"antihistamine" typically refers to H1 antagonists, which relieve allergic reactions. Like the H1 antagonists, some H2 antagonists function as inverse agonists

physiological processes. There are four main types of histamine receptors: H1, H2, H3, and H4. H1 receptors are linked to allergic responses, H2 to gastric

and NREM (non-REM) sleep. First-generation H1 antihistamines (i.e., antagonists of histamine receptor H1) are capable of crossing the blood–brain barrier

receptor) Antihistamine – histamine receptor antagonists H3-receptor antagonist Histamine H1-receptor Histamine H2-receptor Histamine H4-receptor GRCh38: Ensembl

during breastfeeding is not recommended. The medication works by blocking histamine H1 receptors, mostly outside the brain. Cetirizine can be used for paediatric

Quetiapine blocks 5-HT2A, 5-HT1A, dopamine receptors D1 and D2, histamine receptor H1, and A1 adrenoreceptors. Ketanserin Antihypertensive. Blocks 5-HT2A

An H3 receptor antagonist is a type of antihistaminic drug used to block the action of histamine at H3 receptors. Unlike the H1 and H2 receptors which