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Dicycloverine

Clinical data
Trade names	Byclomine, Bentyl, Dibent, Di-Spaz, Dilomine
AHFS/Drugs.com	International Drug Names
MedlinePlus	a684007
ATC code	A03AA07 (WHO)
Pharmacokinetic data
Protein binding	>99%
Elimination half-life	5 h
Identifiers
IUPAC name 2-(diethylamino)ethyl bi(cyclohexane)-1-carboxylate
CAS Number	77-19-0
PubChem CID	3042
IUPHAR/BPS	355
DrugBank	DB00804
ChemSpider	2934
UNII	4KV4X8IF6V
KEGG	D07820
ChEBI	CHEBI:4514
ChEMBL	ChEMBL1123
CompTox Dashboard (EPA)	DTXSID1022926
ECHA InfoCard	100.000.919
Chemical and physical data
Formula	C19H35NO2
Molar mass	309.487 g/mol g·mol
3D model (JSmol)	Interactive image
SMILES O=C(OCCN(CC)CC)C1(CCCCC1)C2CCCCC2
InChI InChI=1S/C19H35NO2/c1-3-20(4-2)15-16-22-18(21)19(13-9-6-10-14-19)17-11-7-5-8-12-17/h17H,3-16H2,1-2H3 Key:CURUTKGFNZGFSE-UHFFFAOYSA-N
(verify)

Dicyclomine, also known as dicycloverine, is an anticholinergic that blocks muscarinic receptors. Dicycloverine was first synthesized in the United States circa 1947.

Clinical uses

Dicyclomine is used to treat intestinal hypermotility, the symptoms of Irritable Bowel Syndrome (IBS) (also known as spastic colon). It relieves muscle spasms and cramping in the gastrointestinal tract by blocking the activity of acetylcholine on cholinergic (or muscarinic) receptors on the surface of muscle cells. It is a smooth muscle relaxant.

In America, it is sold under the trade names: Byclomine, Bentyl, Dibent, Di-Spaz, Dilomine.

It is present in antibacterial burn cream (trade name Ambix) in combination with phenol.

Another clinical use for dicycloverine has been as an active placebo in some studies involving various aspects of the use of opioids such as morphine, pethidine, diacetylmorphine, codeine &c.

In the UK it is sold under the trade names: Merbentyl (containing 10 mg dicycloverine) and Merbentyl 20 (containing 20 mg dicycloverine).

It is also sold in the UK as part of a multi-ingredient preparation under the trade name Kolanticon (Peckforton Pharmaceuticals), which in addition to dicycloverine, contains an antiflatulent (simethicone) and two antacids (aluminium hydroxide and magnesium oxide).

It is sold under the trade names Bentylol (Hoechst Marion Roussel), Formulex (ICN), and Lomine (Riva) in Canada. it is sold under the trade names spasmo proxyvon and spasmo plus in India

Side effects

Dicyclomine can cause a range of anticholinergic side effects such as dry mouth, nausea and at higher doses, deliriant effects. Brief euphoria and an aphrodisiac effect are also known to occur in some cases. Recreational use of this drug has been reported in Brazil, as well as in Egypt, Iran, Russia, Ukraine and India.

Breastfeeding is not recommended while using this drug. Consult a doctor or pharmacist for clarification. Dicyclomine's effects may be intensified with alcohol. Users should use care when operating vehicles and/or dangerous machines.

References

1. Carlini E. A. (1993). "Preliminary note: dangerous use of anticholinergic drugs in Brazil". Drug and Alcohol Dependence. 32 (1): 1–7. doi:10.1016/0376-8716(93)90016-J. PMID 8486081.

Notes

• Brenner, G. M. (2000). Pharmacology. Philadelphia, PA: W.B. Saunders Company. ISBN 0-7216-7757-6
• Canadian Pharmacists Association (2000). Compendium of Pharmaceuticals and Specialties (25th ed.). Toronto, ON: Webcom. ISBN 0-919115-76-4

External links

• Dicyclomine on Medicine Net
• Dicyclomine on Medline Plus

• Muscarinic antagonists
• Amines
• Carboxylate esters
• Antispasmodics