Muscarinic antagonist: Difference between revisions
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Latest revision as of 19:42, 4 September 2012
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
A muscarinic receptor antagonist is an agent that reduces the activity of the muscarinic acetylcholine receptor. Most of them are synthetic, but scopolamine atropine are belladonna alkaloids, and are naturally extracted.
Important[1] muscarinic agonists include atropine, hyoscine, ipratropium, tropicamide, cyclopentolate and pirenzepine.
Comparison table
| Substance | Trade names | Mechanism[2] | Clinical use[2] | Adverse effects[2] |
|---|---|---|---|---|
| Atropine (D/L-Hyoscyamine) | non-selective antagonism, CNS stimulation |
|
||
| Scopolamine (L-Hyoscine) | non-selective antagonism, CNS depression |
|
| |
| Ipratropium | non-selective antagonism, without any mucociliary excretion inhibition. |
|
||
| Tropicamide | short acting non-selective antagonism, CNS depression |
|
| |
| Pirenzepine | M1 receptor-selective antagonist
|
|
(fewer than non-selective ones) | |
| Diphenhydramine | Benadryl | |||
| Dimenhydrinate | Dramamine | |||
| dicyclomine | ||||
| flavoxate | ||||
| oxybutynin | ||||
| tiotropium | Spiriva | |||
| cyclopentolate | short acting non-selective antagonism, CNS depression |
|
| |
| atropine methonitrate | non-selective antagonism, blocks transmission in ganglia |
|
| |
| trihexyphenidyl | Artane | |||
| tolterodine | Detrusitol | |||
| solifenacin | Vesicare | |||
| darifenacin | Enablex | |||
| benztropine | Cogentin |
See also
References
- ↑ Rang, H. P. (2003). Pharmacology. Edinburgh: Churchill Livingstone. ISBN 0-443-07145-4. Page 147
- ↑ 2.0 2.1 2.2 Unless else specified in table boxes, then ref is: Rang, H. P. (2003). Pharmacology. Edinburgh: Churchill Livingstone. ISBN 0-443-07145-4. Page 147
External links
- http://cvpharmacology.com/antiarrhy/atropine.htm
- Muscarinic+antagonists at the US National Library of Medicine Medical Subject Headings (MeSH)
Template:Drugs for functional gastrointestinal disorders
Template:Mydriatics and cycloplegics Template:Receptor agonists and antagonists