Antihistamines: Difference between revisions
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==Types== | ==Types== | ||
=== | ===H<sub>1</sub> antagonists=== | ||
*[[Brompheniramine]] (Dimetane) | *[[Brompheniramine]] (Dimetane) | ||
*[[Cetirizine]] (Zyrtec) | *[[Cetirizine]] (Zyrtec) | ||
*[[Dimenhydrinate]] | *[[Dimenhydrinate]] | ||
*[[Diphenhydramine]] ( | *[[Diphenhydramine]] (Benadryl) | ||
*[[Doxylamine]] | *[[Doxylamine]] | ||
*[[Fexofenadine]] (Allegra) | *[[Fexofenadine]] (Allegra) | ||
*[[Hydroxyzine]] (Vistaril) | *[[Hydroxyzine]] (Vistaril) | ||
*[[Loratadine]] (Claritin) | *[[Loratadine]] (Claritin) | ||
*[[ | *[[Meclizine]] | ||
===H<sub>2</sub> | ===H<sub>2</sub> antagonists=== | ||
*[[Cimetidine]] | *[[Cimetidine]] | ||
*[[Famotidine]] | *[[Famotidine]] | ||
*[[Nizatidine]] | *[[Nizatidine]] | ||
*[[Ranitidine]] | *[[Ranitidine]] | ||
*[[Roxatidine]] | *[[Roxatidine]] | ||
==Indications== | ==Indications== | ||
| Line 29: | Line 27: | ||
**[[Insomnia]] | **[[Insomnia]] | ||
**[[Vertigo]] | **[[Vertigo]] | ||
**[[Motion sickness]] | |||
**[[Nausea and vomiting in pregnancy]] | |||
*H<sub>2</sub> antagonists | *H<sub>2</sub> antagonists | ||
**[[GERD]]/[[peptic ulcers]] | **[[GERD]]/[[peptic ulcers]] | ||
**[[ | **[[Allergic reactions]] | ||
==Side Effects== | ==Side Effects== | ||
*Sedation | *Sedation | ||
**Second-generation antihistamines cross the blood–brain barrier to a much lower degree (therefore are less sedating), however high doses can still induce the drowsiness | **Second-generation antihistamines cross the blood–brain barrier to a much lower degree (therefore are less sedating), however high doses can still induce the drowsiness | ||
==See Also== | ==See Also== | ||
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<references/> | <references/> | ||
[[Category: | [[Category:Pharmacology]] | ||
Latest revision as of 22:33, 7 March 2021
Background
- Also known as histamine antagonists
- In common use, the term antihistamine refers only to compounds that inhibit action at the H1 receptor (and not H2, etc.).
Types
H1 antagonists
- Brompheniramine (Dimetane)
- Cetirizine (Zyrtec)
- Dimenhydrinate
- Diphenhydramine (Benadryl)
- Doxylamine
- Fexofenadine (Allegra)
- Hydroxyzine (Vistaril)
- Loratadine (Claritin)
- Meclizine
H2 antagonists
Indications
- H1 antagonists
- H2 antagonists
Side Effects
- Sedation
- Second-generation antihistamines cross the blood–brain barrier to a much lower degree (therefore are less sedating), however high doses can still induce the drowsiness