List of H2 antagonists (H2 blockers) - Drugs.com
H2 antagonists block histamine-induced gastric acid secretion from the parietal cells of the gastric mucosa (lining of the stomach). H2 antagonists are used to treat gastroesophageal reflux disease , gastrointestinal ulcers and other gastrointestinal hypersecretory conditions.
List of Common Antihistamines + Uses & Side Effects - Drugs.com
2023年4月17日 · Antihistamines block histamine release from histamine-1 receptors and are mostly used to treat allergies or cold and flu symptoms, although some first-generation antihistamines (also called sedating antihistamines) may be used for other conditions, such as nausea or motion sickness.
Ophthalmic antihistamines and decongestants - Drugs.com
Antihistamines block histamine release from histamine-1 receptors and are used to treat the symptoms of an allergic reaction such as edema (swelling), itch, inflammation (redness), and watery eyes. Decongestants relieve congestion by narrowing (vasoconstricting) blood vessels.
Zantac Uses, Side Effects, Warnings & Recalls - Drugs.com
2024年5月29日 · Zantac belongs to a group of drugs called histamine-2 blockers. It works by reducing the amount of acid your stomach produces. Zantac has been used to treat and prevent ulcers in the stomach and intestines.
Can you take hydroxyzine for anxiety and sleep? - Drugs.com
2023年2月13日 · Hydroxyzine has activity at the serotonergic (5HT2) receptors in the brain which may contribute to its anti-anxiety effect. Antihistamines which work at the H1 receptor, like hydroxyzine, can cause drowsiness, which may be helpful if …
Antihistamines General Statement (Monograph) - Drugs.com
Histamine binds to and activates specific receptors in the nose, eyes, respiratory tract, and skin, causing characteristic allergic signs and symptoms. The term antihistamine has historically been used to describe drugs that act as H 1 -receptor antagonists.
Famotidine: 7 things you should know - Drugs.com
2024年7月26日 · Famotidine is specific for H2 receptors (other drugs, called antihistamines, block H1 receptors that are primarily involved with allergic-type reactions). Famotidine belongs to a group of drugs known as H2 receptor antagonists (also called H2 blockers).
What is betahistine used for? - Drugs.com
2024年11月14日 · Experts aren’t sure exactly how betahistine works to treat Meniere’s disease but it is a potent histamine-3 (H3) receptor antagonist and may work as a vasodilator. Blocking H3 receptors increases histamine release and some research suggests histamine receptors regulate the function of nerves in the inner ear.
Loratadine: 7 things you should know - Drugs.com
2024年5月16日 · Loratadine binds to histamine receptors and prevents histamine from affecting that receptor, which reduces the symptoms of an allergic reaction. Loratadine belongs to the group of drugs known as antihistamines.
Ranitidine: 7 things you should know - Drugs.com
2024年5月16日 · Ranitidine is specific for H2 receptors (other drugs, called antihistamines, block H1 receptors which are primarily involved with allergic-type reactions). Ranitidine belongs to a group of drugs known as H2 receptor antagonists (also called H2 blockers).