DIPHENOXYLATE

Details

Stereochemistry	ACHIRAL
Molecular Formula	C30H32N2O2
Molecular Weight	452.5873
Optical Activity	NONE
Defined Stereocenters	0 / 0
E/Z Centers	0
Charge	0

SHOW SMILES / InChI

Structure Search

SMILES

CCOC(=O)C1(CCN(CCC(C#N)(C2=CC=CC=C2)C3=CC=CC=C3)CC1)C4=CC=CC=C4

InChI

InChIKey=HYPPXZBJBPSRLK-UHFFFAOYSA-N

InChI=1S/C30H32N2O2/c1-2-34-28(33)29(25-12-6-3-7-13-25)18-21-32(22-19-29)23-20-30(24-31,26-14-8-4-9-15-26)27-16-10-5-11-17-27/h3-17H,2,18-23H2,1H3

HIDE SMILES / InChI

Molecular Formula	C30H32N2O2
Molecular Weight	452.5873
Charge	0
Count

Stereochemistry	ACHIRAL
Additional Stereochemistry	No
Defined Stereocenters	0 / 0
E/Z Centers	0
Optical Activity	NONE

Description
Sources: https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=f170584a-1072-4fd7-b1dc-6756703483b9
Curator's Comment: description was created based on several sources, including ISBN-13: 978-0323055932

Diphenoxylate is an opioid drug used for the treatment of acute diarrhea. The drug is used in combination with atropine and marketed under names Lomotil and Diphenoxylate hydrochloride and atropine sulfate. Diphenoxylate is biotransformed in man by ester hydrolysis to diphenoxylic acid (difenoxine), which is biologically active and the major metabolite in the blood. The drug exerts its action by activating mu opioid receptors of intestinal mucosa.

CNS Activity

Originator

Approval Year

Targets

Primary Target	Pharmacology	Condition	Potency
Mu-type opioid receptor 61 Target ID: P35372\|\|\|G8XRH8\|\|\|Q5TDA1\|\|\|Q9UN57 Gene ID: 4988.0 Gene Symbol: OPRM1 Target Organism: Homo sapiens (Human) Sources: ISBN-13: 978-0323055932	Agonist 2752

Conditions

Condition	Modality	Targets	Highest Phase	Product
Acute diarrhea 4 Sources: https://www.hpra.ie/img/uploaded/swedocuments/PA%20899-7-1%20PIL%20-2162562-11062015155951-635696351923400000.pdf	Curative		Approved 8583	LOMOTIL Approved Use Lomotil is effective as adjunctive therapy in the management of diarrhea. Launch Date 1960

C_max

Value	Dose	Co-administered	Analyte	Population
9.5 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/5026379	5 mg single, oral dose: 5 mg route of administration: Oral experiment type: SINGLE co-administered:		DIPHENOXYLATE plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: FASTED

T_1/2

Value	Dose	Co-administered	Analyte	Population
2.5 h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/5026379	5 mg single, oral dose: 5 mg route of administration: Oral experiment type: SINGLE co-administered:		DIPHENOXYLATE plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: FASTED

F_unbound

Value	Dose	Co-administered	Analyte	Population
15.5% OTHER https://go.drugbank.com/drugs/DB01081			DIPHENOXYLATE unknown	Homo sapiens population: UNKNOWN age: UNKNOWN sex: UNKNOWN food status: UNKNOWN

Doses

Dose	Population	Adverse events
20 mg 1 times / day steady, oral Studied dose Dose: 20 mg, 1 times / day Route: oral Route: steady Dose: 20 mg, 1 times / day Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/012462s048lbl.pdf	unhealthy Health Status: unhealthy Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/012462s048lbl.pdf	Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/012462s048lbl.pdf
300 mg 1 times / day steady, oral Dose: 300 mg, 1 times / day Route: oral Route: steady Dose: 300 mg, 1 times / day Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/012462s048lbl.pdf	unhealthy Health Status: unhealthy Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/012462s048lbl.pdf	Other AEs: Drug dependence... Other AEs: Drug dependence Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/012462s048lbl.pdf

AEs

AE	Significance	Dose	Population
Drug dependence		300 mg 1 times / day steady, oral Dose: 300 mg, 1 times / day Route: oral Route: steady Dose: 300 mg, 1 times / day Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/012462s048lbl.pdf	unhealthy Health Status: unhealthy Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/012462s048lbl.pdf

Overview

CYP3A4	CYP2C9	CYP2D6	hERG
inducer 1087 inhibitor 2252	inducer 440	inducer 109 inhibitor 2507	inhibitor 2217

OverviewOther

Other Inhibitor	Other Substrate	Other Inducer
Ca2+ channels 59 CYP2B6 926	P-gp 2052	CYP2C19 329 CYP1A2 832 CYP2B6 669

Drug as perpetrator

Target	Modality	Activity	Clinical evidence
CYP2C19 2141	inducer 1966 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: abstract	minor	yes (co-administration study) Comment: diphenoxylate decreased omeprazole AUC and Cmax Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: abstract
CYP2B6 1160	inhibitor 4027 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: 18805.0	no
CYP2D6 2546	inhibitor 4027 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: 18805.0	no
CYP3A4 2633	inhibitor 4027 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: 18805.0	no
CYP2B6 1160	inducer 1966 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: 18805.0	no	no (co-administration study) Comment: diphenoxylate had no effect on buproprion AUC and Cmax Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: 18805.0
CYP2D6 2546	inducer 1966 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: 18805.0	no	no (co-administration study) Comment: diphenoxylate had no effect on metroprolol AUC and Cmax Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: 18805.0
CYP3A4 2633	inducer 1966 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: 18805.0	no	no (co-administration study) Comment: diphenoxylate had no effect on testosterone AUC and Cmax Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: 18805.0
Ca2+ channels 62	inhibitor 4027 Sources: https://www.sciencedirect.com/science/article/abs/pii/S0041008X03003727 Page: 136.0	unlikely
CYP1A2 2333	inducer 1966 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: abstract	yes	yes (co-administration study) Comment: diphenoxylate decreased phenacetin AUC and Cmax Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: abstract
CYP2C9 2497	inducer 1966 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: abstract	yes	yes (co-administration study) Comment: diphenoxylate decreased tolbutamide AUC and Cmax Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4694398/ Page: abstract

Drug as victim

Target	Modality	Activity	Metabolite	Clinical evidence
P-gp 2052	substrate 4014 Sources: https://www.sciencedirect.com/science/article/abs/pii/S0041008X03003727 Page: 135.0	no

Tox targets

Target	Modality	Activity	Metabolite	Clinical evidence
hERG 2263	inhibitor 2237 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249760/ Page: abstract

Sourcing

Vendor/Aggregator	ID	URL
ChEBI	CHEBI:4639	https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:4639
ChemicalBook	CB3301641	https://www.chemicalbook.com/ChemicalProductProperty_EN_CB3301641
ZINC	ZINC000003830716	http://zinc15.docking.org/substances/ZINC000003830716

PubMed

Title	Date	PubMed
Irritable bowel syndrome: update on pathogenesis and management.	2002 Jan-Mar	12116690
The efficacy of octreotide in the therapy of acute radiation-induced diarrhea: a randomized controlled study.	2002 Sep 1	12182992
Drug treatment for faecal incontinence in adults.	2003	12917921
Antidiarrhoeal effects of methanolic root extract of Hemidesmus indicus (Indian sarsaparilla)--an in vitro and in vivo study.	2003 Apr	15255649
Small amounts of some drugs can be toxic to young children: one pill or one swallow can require aggressive treatment.	2003 Jun	12776089
Management of acute cancer treatment-induced diarrhea.	2003 Nov	14702928
Potential roles of P-gp and calcium channels in loperamide and diphenoxylate transport.	2003 Nov 15	14613723
Medical management of fecal incontinence.	2004 Jan	14978639
Protective effect of Arque-Ajeeb on acute experimental diarrhoea in rats.	2004 Jul 6	15238156
A randomized controlled trial of mycophenolate mofetil in patients with IgA nephropathy [ISRCTN62574616].	2004 Mar 25	15043759
The clinical and pathologic significance of microscopic colitis.	2004 May-Jun	15115927
Deadly pediatric poisons: nine common agents that kill at low doses.	2004 Nov	15474780
Comparison between prospective and retrospective evaluation of Crohn's disease activity index.	2005 May	15842587
Lomotil dependence: a note of caution.	2005 Nov-Dec	16483040
Tissue distribution of loperamide and N-desmethylloperamide following a fatal overdose.	2005 Oct	16419413
Guidelines for the diagnosis and management of carcinoid tumours. Part 1: the gastrointestinal tract. A statement from a Canadian National Carcinoid Expert Group.	2006 Apr	17576444
Treatment of diarrhea in patients with inflammatory bowel disease: concepts and cautions.	2007	18192964
Loperamide: a pharmacological review.	2007	18192961
[Treating travelers' diarrhea. When should medication be given?].	2007 Dec	18097699
Prevention and management of chemotherapy-induced diarrhea in patients with colorectal cancer: a consensus statement by the Canadian Working Group on Chemotherapy-Induced Diarrhea.	2007 Feb	17576459
Diphenoxylate hydrochloride dependency.	2007 Jul	17667743
Loperamide therapy for acute diarrhea in children: systematic review and meta-analysis.	2007 Mar 27	17388664
Pharmacotherapy for fecal incontinence: a review.	2007 May	17205204
Myasthenia gravis.	2007 Nov 6	17986328
Drug-induced diarrhea.	2007 Oct	17991336
In vivo evaluation of antidiarrhoeal activity of Rhus semialata fruit extract in rats.	2007 Oct 27	20162061
Methylnaltrexone in the treatment of opioid-induced constipation.	2008	21677823
Toward achieving optimal response: understanding and managing antidepressant side effects.	2008	19170398
Are one or two dangerous? Diphenoxylate-atropine exposure in toddlers.	2008 Jan	17976801
Anticholinergic activity of 107 medications commonly used by older adults.	2008 Jul	18510583
[Methodological study on quality evaluation of rhubarb based on purgative bioassay].	2008 Jun	18831215
[Topic: Treating travelers' diarrhea. When should medication be given?].	2008 Jun	18537033
Long-term outcome of in-patients with substance use disorders: A study from North India.	2008 Oct	19823613
Antimotility agents for chronic diarrhoea in people with HIV/AIDS.	2008 Oct 8	18843696
The role of loperamide in gastrointestinal disorders.	2008 Winter	18477966
Hashish body packing: a case report.	2009	19724651
Bowel management for the treatment of pediatric fecal incontinence.	2009 Dec	19830436
Management of side effects associated with sunitinib therapy for patients with renal cell carcinoma.	2009 Feb 18	20616894
[Roles of enteric nervous system neurotransmitters and interstitial cells of Cajal in the colon in slow transit constipation in rats].	2009 Jun	19558815
Pharmacokinetic drug interactions of synthetic opiate analgesics.	2009 Mar-Apr	19377028
Pretreatment with diphenoxylate hydrochloride/atropine sulfate (Lomotil) does not decrease physiologic bowel FDG activity on PET/CT scans of the abdomen and pelvis.	2009 Mar-Apr	19037613
Managing toxicities and optimal dosing of targeted drugs in advanced kidney cancer.	2009 May	19478903
An Open-Label, Noncomparative, Multicenter Study to Evaluate Efficacy and Safety of NASHA/Dx Gel as a Bulking Agent for the Treatment of Fecal Incontinence.	2010	21234379
Re: "Are one or two dangerous? Diphenoxylate-atropine exposure in toddlers".	2010 Apr	19545964
Inappropriate prescribing in the hospitalized elderly patient: defining the problem, evaluation tools, and possible solutions.	2010 Apr 7	20396637
Development of a list of potentially inappropriate drugs for the korean elderly using the delphi method.	2010 Dec	21818443
Antidiarrhoeal activity of carbazole alkaloids from Murraya koenigii Spreng (Rutaceae) seeds.	2010 Jan	19695314
Lymphocytic colitis presenting as difficult diarrhoea in an African woman: a case report and review of the literature.	2010 Jan 29	20205879
Antidiarrheal activity of extracts and compound from Trilepisium madagascariense stem bark.	2010 Jun	20871767
Effect of an antidiabetic polysaccharide from Inula japonica on constipation in normal and two models of experimental constipated mice.	2010 Nov	20564501

Patents

Sample Use Guides

In Vivo Use Guide

Adults: The recommended initial dosage is two Lomotil tablets (each tablet contains 2,5 mg diphenoxylate hydrochloride) four times daily; Dosage schedule for children: The recommended initial total daily dosage of Lomotil liquid for children is 0.3 to 0.4 mg/kg, administered in four divided doses.

Route of Administration: Oral

In Vitro Use Guide

Unknown

Substance Class	Chemical Created by `admin` on `Wed Apr 02 06:52:11 GMT 2025` Edited by `admin` on `Wed Apr 02 06:52:11 GMT 2025`
Record UNII	73312P173G
Record Status	`Validated (UNII)`
Record Version

Download

Name

Type

Language

DIPHENOXYLATE

Official Name

English

IDS-ND-016

Preferred Name

English

diphenoxylate [INN]

Common Name

English

ISONIPECOTIC ACID, 1-(3-CYANO-3,3-DIPHENYLPROPYL)-4-PHENYL-, ETHYL ESTER

Common Name

English

DIPHENOXYLATE [MI]

Common Name

English

DIPHENOXYLATE [VANDF]

Common Name

English

DIPHENOXYLATE [HSDB]

Common Name

English

1-(3-CYANO-3,3-DIPHENYLPROPYL)-4-PHENYLPIPERIDINE-4-CARBOXYLIC ACID ETHYL ESTER

Systematic Name

English

Diphenoxylate [WHO-DD]

Common Name

English

4-PIPERIDINECARBOXYLIC ACID, 1-(3-CYANO-3,3-DIPHENYLPROPYL)-4-PHENYL-, ETHYL ESTER

Systematic Name

English

Classification Tree Code System Code

NDF-RT

N0000178374