Histamine H1 Antagonists


Antagonists, Histamine H1

Antagonists, Histamine H1 Receptor

Antihistamines, Classical

Antihistamines, Sedating

Antihistaminics, Classical

Antihistaminics, H1

Blockaders, Histamine H1 Receptor

Classical Antihistamines

Classical Antihistaminics

First Generation H1 Antagonists

H1 Antagonists, Histamine

H1 Antihistaminics

H1 Receptor Blockaders

Histamine H1 Blockers

Histamine H1 Receptor Antagonists

Histamine H1 Receptor Blockaders

Receptor Blockaders, H1

Sedating Antihistamines

Drugs that selectively bind to but do not activate histamine H1 receptors, thereby blocking the actions of endogenous histamine. Included here are the classical antihistaminics that antagonize or prevent the action of histamine mainly in immediate hypersensitivity. They act in the bronchi, capillaries, and some other smooth muscles, and are used to prevent or allay motion sickness, seasonal rhinitis, and allergic dermatitis and to induce somnolence. The effects of blocking central nervous system H1 receptors are not as well understood.