Antihistamines: Difference between revisions
Neil.m.young (talk | contribs) No edit summary |
|||
| Line 8: | Line 8: | ||
*[[Cetirizine]] (Zyrtec) | *[[Cetirizine]] (Zyrtec) | ||
*[[Dimenhydrinate]] | *[[Dimenhydrinate]] | ||
*[[Diphenhydramine]] ( | *[[Diphenhydramine]] (Benadryl) | ||
*[[Doxylamine]] | *[[Doxylamine]] | ||
*[[Fexofenadine]] (Allegra) | *[[Fexofenadine]] (Allegra) | ||
*[[Hydroxyzine]] (Vistaril) | *[[Hydroxyzine]] (Vistaril) | ||
*[[Loratadine]] (Claritin) | *[[Loratadine]] (Claritin) | ||
*[[Meclozine]] | *[[Meclozine]] | ||
===H<sub>2</sub>-receptor antagonists=== | ===H<sub>2</sub>-receptor antagonists=== | ||
Revision as of 11:31, 25 July 2015
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 antagonist
- Brompheniramine (Dimetane)
- Cetirizine (Zyrtec)
- Dimenhydrinate
- Diphenhydramine (Benadryl)
- Doxylamine
- Fexofenadine (Allegra)
- Hydroxyzine (Vistaril)
- Loratadine (Claritin)
- Meclozine
H2-receptor 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
- Anticholinergic toxicity