Dextromethorphan

US Approved OTC

First approved in 1954

Details

Stereochemistry	ABSOLUTE
Molecular Formula	C18H25NO
Molecular Weight	271.3972
Optical Activity	( + )
Defined Stereocenters	3 / 3
E/Z Centers	0
Charge	0

SHOW SMILES / InChI

Structure Search

SMILES

COC1=CC=C2C[C@H]3[C@H]4CCCC[C@@]4(CCN3C)C2=C1

InChI

InChIKey=MKXZASYAUGDDCJ-NJAFHUGGSA-N

InChI=1S/C18H25NO/c1-19-10-9-18-8-4-3-5-15(18)17(19)11-13-6-7-14(20-2)12-16(13)18/h6-7,12,15,17H,3-5,8-11H2,1-2H3/t15-,17+,18+/m1/s1

HIDE SMILES / InChI

Molecular Formula	C18H25NO
Molecular Weight	271.3972
Charge	0
Count

Stereochemistry	ABSOLUTE
Additional Stereochemistry	No
Defined Stereocenters	3 / 3
E/Z Centers	0
Optical Activity	UNSPECIFIED

Description
Sources: https://www.ncbi.nlm.nih.gov/pubmed/27139517
Curator's Comment: Description was created based on several sources, including https://www.ncbi.nlm.nih.gov/pubmed/2694543 http://www.who.int/medicines/areas/quality_safety/5.1Dextromethorphan_pre-review.pdf http://www.accessdata.fda.gov/drugsatfda_docs/label/2004/21620_mucinex_lbl.pdf https://www.ncbi.nlm.nih.gov/pubmed/25420446

Dextromethorphan is a non-narcotic morphine derivative widely used as an antitussive for almost 40 years. It has attracted attention due to its anticonvulsant and neuroprotective properties. It is a cough suppressant in many over-the-counter cold and cough medicines. In 2010, the FDA approved the combination product dextromethorphan/quinidine for the treatment of pseudobulbar affect. Dextromethorphan suppresses the cough reflex by a direct action on the cough center in the medulla of the brain. Dextromethorphan shows high-affinity binding to several regions of the brain, including the medullary cough center. This compound is an NMDA receptor antagonist and acts as a non-competitive channel blocker. It is one of the widely used antitussives and is used to study the involvement of glutamate receptors in neurotoxicity. Dextromethorphan (DM) is a sigma-1 receptor agonist and an uncompetitive NMDA receptor antagonist. The mechanism by which dextromethorphan exerts therapeutic effects in patients with pseudobulbar affect is unknown. Dextromethorphan should not be taken with monoamine oxidase inhibitors due to the potential for serotonin syndrome. Dextromethorphan is extensively metabolized by CYP2D6 to dextrorphan, which is rapidly glucuronidated and unable to cross the blood-brain barrier.

CNS Activity

Originator

Approval Year

Targets

Primary Target	Pharmacology	Condition	Potency
Sigma opioid receptor 64 Target ID: CHEMBL287 Sources: https://www.ncbi.nlm.nih.gov/pubmed/15723099	Agonist 2752		205.0 nM [Ki]
Glutamate [NMDA] receptor subunit 3A 21 Target ID: CHEMBL4787 Sources: https://www.ncbi.nlm.nih.gov/pubmed/2897648	Antagonist 2849

Conditions

Condition	Modality	Targets	Highest Phase	Product
Cough 106 Sources: http://www.accessdata.fda.gov/drugsatfda_docs/label/2004/21620_mucinex_lbl.pdf	Primary		Approved 8583	MUCINEX DM Approved Use Helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive: temporarily relieves: cough due to minor throat and bronchial irritation as may occur with the common cold or inhaled irritants; the intensity of coughing; the impulse to cough to help you get to sleep Launch Date 2004
Pseudobulbar affect 7 Sources: https://www.ncbi.nlm.nih.gov/pubmed/26000221	Primary		Approved 8583	NUEDEXTA Approved Use NUEDEXTA is indicated for the treatment of pseudobulbar affect (PBA). PBA occurs secondary to a variety of otherwise unrelated neurologic conditions, and is characterized by involuntary, sudden, and frequent episodes of laughing and/or crying. PBA episodes typically occur out of proportion or incongruent to the underlying emotional state. PBA is a specific condition, distinct from other types of emotional lability that may occur in patients with neurological disease or injury. Launch Date 2010

C_max

Value	Dose	Co-administered	Analyte	Population
2.9 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	30 mg 2 times / day steady-state, oral dose: 30 mg route of administration: Oral experiment type: STEADY-STATE co-administered:		DEXTROMETHORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN
4.2 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	45 mg 2 times / day steady-state, oral dose: 45 mg route of administration: Oral experiment type: STEADY-STATE co-administered:		DEXTROMETHORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN
599 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	45 mg 2 times / day steady-state, oral dose: 45 mg route of administration: Oral experiment type: STEADY-STATE co-administered:		DEXTRORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN
7.7 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	60 mg 2 times / day steady-state, oral dose: 60 mg route of administration: Oral experiment type: STEADY-STATE co-administered:		DEXTROMETHORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN
709 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	60 mg 2 times / day steady-state, oral dose: 60 mg route of administration: Oral experiment type: STEADY-STATE co-administered:		DEXTRORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN
15.9 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	30 mg single, oral dose: 30 mg route of administration: Oral experiment type: SINGLE co-administered: QUINIDINE	QUINIDINE	DEXTROMETHORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED
95.5 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	30 mg 2 times / day steady-state, oral dose: 30 mg route of administration: Oral experiment type: STEADY-STATE co-administered: QUINIDINE	QUINIDINE	DEXTROMETHORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN
124.9 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	30 mg single, oral dose: 30 mg route of administration: Oral experiment type: SINGLE co-administered: QUINIDINE	QUINIDINE	DEXTRORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED
123.5 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	30 mg 2 times / day steady-state, oral dose: 30 mg route of administration: Oral experiment type: STEADY-STATE co-administered: QUINIDINE	QUINIDINE	DEXTRORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN

AUC

Value	Dose	Co-administered	Analyte	Population
68 nM*h Clinical Trial https://clinicaltrials.gov/ct2/show/NCT01361217	30 mg single, oral dose: 30 mg route of administration: oral experiment type: single co-administered:		DEXTROMETHORPHAN plasma	Homo sapiens population: healthy age: adults sex: food status:
17.8 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	30 mg 2 times / day steady-state, oral dose: 30 mg route of administration: Oral experiment type: STEADY-STATE co-administered:		DEXTROMETHORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN
32 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	45 mg 2 times / day steady-state, oral dose: 45 mg route of administration: Oral experiment type: STEADY-STATE co-administered:		DEXTROMETHORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN
2898 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	45 mg 2 times / day steady-state, oral dose: 45 mg route of administration: Oral experiment type: STEADY-STATE co-administered:		DEXTRORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN
52 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	60 mg 2 times / day steady-state, oral dose: 60 mg route of administration: Oral experiment type: STEADY-STATE co-administered:		DEXTROMETHORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN
3608 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	60 mg 2 times / day steady-state, oral dose: 60 mg route of administration: Oral experiment type: STEADY-STATE co-administered:		DEXTRORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN
133.3 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	30 mg single, oral dose: 30 mg route of administration: Oral experiment type: SINGLE co-administered: QUINIDINE	QUINIDINE	DEXTROMETHORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED
1049 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	30 mg 2 times / day steady-state, oral dose: 30 mg route of administration: Oral experiment type: STEADY-STATE co-administered: QUINIDINE	QUINIDINE	DEXTROMETHORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN
933.8 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	30 mg single, oral dose: 30 mg route of administration: Oral experiment type: SINGLE co-administered: QUINIDINE	QUINIDINE	DEXTRORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED
1000.5 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	30 mg 2 times / day steady-state, oral dose: 30 mg route of administration: Oral experiment type: STEADY-STATE co-administered: QUINIDINE	QUINIDINE	DEXTRORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN

T_1/2

Value	Dose	Co-administered	Analyte	Population
13.1 h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/15342614/	30 mg 2 times / day steady-state, oral dose: 30 mg route of administration: Oral experiment type: STEADY-STATE co-administered: QUINIDINE	QUINIDINE	DEXTROMETHORPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: UNKNOWN

Doses

Dose	Population	Adverse events
50 mg 4 times / day steady, oral Dose: 50 mg, 4 times / day Route: oral Route: steady Dose: 50 mg, 4 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/8741125	unhealthy, 19-52 years Health Status: unhealthy Age Group: 19-52 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/8741125	Sources: https://pubmed.ncbi.nlm.nih.gov/8741125
960 mg 1 times / day multiple, oral Highest studied dose Dose: 960 mg, 1 times / day Route: oral Route: multiple Dose: 960 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/2529964	unhealthy, 19-67 years Health Status: unhealthy Age Group: 19-67 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/2529964	Sources: https://pubmed.ncbi.nlm.nih.gov/2529964
120 mg single, oral Recommended Dose: 120 mg Route: oral Route: single Dose: 120 mg Sources: https://pubmed.ncbi.nlm.nih.gov/26294136	healthy, 26.5 years Health Status: healthy Age Group: 26.5 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/26294136	Sources: https://pubmed.ncbi.nlm.nih.gov/26294136
900 mg single, oral Overdose Dose: 900 mg Route: oral Route: single Dose: 900 mg Sources: https://pubmed.ncbi.nlm.nih.gov/31033494	unknown, 27 years Health Status: unknown Age Group: 27 years Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/31033494	Other AEs: Ischemic colitis... Other AEs: Ischemic colitis (1 patient) Sources: https://pubmed.ncbi.nlm.nih.gov/31033494
270 mg single, oral Overdose Dose: 270 mg Route: oral Route: single Dose: 270 mg Sources: https://pubmed.ncbi.nlm.nih.gov/2018593	unknown, 3 years Health Status: unknown Age Group: 3 years Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/2018593	Other AEs: Lethargy, Ataxia... Other AEs: Lethargy (1 patient) Ataxia (1 patient) Nystagmus (1 patient) Sources: https://pubmed.ncbi.nlm.nih.gov/2018593

AEs

AE	Significance	Dose	Population
Ischemic colitis	1 patient	900 mg single, oral Overdose Dose: 900 mg Route: oral Route: single Dose: 900 mg Sources: https://pubmed.ncbi.nlm.nih.gov/31033494	unknown, 27 years Health Status: unknown Age Group: 27 years Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/31033494
Ataxia	1 patient	270 mg single, oral Overdose Dose: 270 mg Route: oral Route: single Dose: 270 mg Sources: https://pubmed.ncbi.nlm.nih.gov/2018593	unknown, 3 years Health Status: unknown Age Group: 3 years Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/2018593
Lethargy	1 patient	270 mg single, oral Overdose Dose: 270 mg Route: oral Route: single Dose: 270 mg Sources: https://pubmed.ncbi.nlm.nih.gov/2018593	unknown, 3 years Health Status: unknown Age Group: 3 years Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/2018593
Nystagmus	1 patient	270 mg single, oral Overdose Dose: 270 mg Route: oral Route: single Dose: 270 mg Sources: https://pubmed.ncbi.nlm.nih.gov/2018593	unknown, 3 years Health Status: unknown Age Group: 3 years Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/2018593

Overview

CYP3A4	CYP2C9	CYP2D6	hERG
inhibitor 2252 inducer 1087	inhibitor 2438	substrate 1388 inhibitor 2507	inhibitor 2217

OverviewOther

Other Inhibitor	Other Substrate	Other Inducer
CYP1A2 2153 CYP2A6 879 CYP2B6 926 CYP2C8 1057 CYP2C19 2057 CYP2E1 1060	P-gp 2052	CYP1A2 832 CYP2B6 669

Drug as perpetrator

Target	Modality	Activity
CYP1A2 2333	inducer 1966 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021879s000lbl.pdf#page=14 Page: 14.0	no
CYP1A2 2333	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021879s000lbl.pdf#page=14 Page: 14.0	no
CYP2A6 911	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021879s000lbl.pdf#page=14 Page: 14.0	no
CYP2B6 1160	inducer 1966 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021879s000lbl.pdf#page=14 Page: 14.0	no
CYP2B6 1160	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021879s000lbl.pdf#page=14 Page: 14.0	no
CYP2C19 2141	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021879s000lbl.pdf#page=14 Page: 14.0	no
CYP2C8 1117	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021879s000lbl.pdf#page=14 Page: 14.0	no
CYP2C9 2497	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021879s000lbl.pdf#page=14 Page: 14.0	no
CYP2D6 2546	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021879s000lbl.pdf#page=14 Page: 14.0	no
CYP2E1 1146	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021879s000lbl.pdf#page=14 Page: 14.0	no
CYP3A4 2633	inducer 1966 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021879s000lbl.pdf#page=14 Page: 14.0	no
CYP3A4 2633	inhibitor 4027 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021879s000lbl.pdf#page=14 Page: 14.0	no

Drug as victim

Target	Modality	Activity	Metabolite	Clinical evidence
P-gp 2052	substrate 4014 Sources: https://www.eurekaselect.com/66423/article/lack-interaction-nmda-receptor-antagonists-dextromethorphan-and-dextrorphan-p	no
CYP2D6 1388	substrate 4014 Sources: https://pubmed.ncbi.nlm.nih.gov/11602530/ Page: 2.0	yes

Tox targets

Target	Modality	Activity	Metabolite	Clinical evidence
hERG 2263	inhibitor 2237 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2010/021879Orig1s000OtherR.pdf#page=63 Page: 63.0

Sourcing

Vendor/Aggregator	ID	URL
ChEBI	CHEBI:4470	https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:4470
ZINC	ZINC000003201907	http://zinc15.docking.org/substances/ZINC000003201907

PubMed

Title	Date	PubMed
Differential effects of morphinan drugs on haloperidol-induced catalepsy in rats: a comparative study with an N-methyl-D-aspartate antagonist.	1991 Mar-Apr	1685312
The need for rational therapeutics in the use of cough and cold medicine in infants.	1992 Apr	1557278
Visual hallucinations after combining fluoxetine and dextromethorphan.	1992 Oct	1530079
Acute abstinence syndrome following abrupt cessation of long-term use of tramadol (Ultram): a case study.	2000	10985875
Mimicking gene defects to treat drug dependence.	2000	10911933
Cytochrome P450 2D6.1 and cytochrome P450 2D6.10 differ in catalytic activity for multiple substrates.	2001 Aug	11505218
Prediction models in the design of neural network based ECG classifiers: a neural network and genetic programming approach.	2002	11846893
A sensitive LC-MS/MS assay for the determination of dextromethorphan and metabolites in human urine--application for drug interaction studies assessing potential CYP3A and CYP2D6 inhibition.	2002 Aug 22	12151071
Consultation with the specialist: the central serotonin syndrome: paradigm for psychotherapeutic misadventure.	2002 Dec	12456895
Expression, purification, biochemical characterization, and comparative function of human cytochrome P450 2D6.1, 2D6.2, 2D6.10, and 2D6.17 allelic isoforms.	2002 Dec	12438554
Evaluation of cytochrome P450 probe substrates commonly used by the pharmaceutical industry to study in vitro drug interactions.	2002 Dec	12433797
Bridging sectors. Medicon Valley.	2002 Dec 12	12501123
The African-specific CYP2D617 allele encodes an enzyme with changed substrate specificity.	2002 Jan	11823760
Biotechnology in the Medicon Valley.	2002 May	11981549
Dextromethorphan and memantine in painful diabetic neuropathy and postherpetic neuralgia: efficacy and dose-response trials.	2002 May	11981142
Effect of St John's wort on the activities of CYP1A2, CYP3A4, CYP2D6, N-acetyltransferase 2, and xanthine oxidase in healthy males and females.	2004 Apr	15025748
Effect of dextromethorphan, diphenhydramine, and placebo on nocturnal cough and sleep quality for coughing children and their parents.	2004 Jul	15231978
Comparison of various urine collection intervals for caffeine and dextromethorphan phenotyping in children.	2004 Jul	15199075
Evaluation of the One-Step ELISA kit for the detection of buprenorphine in urine, blood, and hair specimens.	2004 Jul 16	15240036
Potential of pranlukast and zafirlukast in the inhibition of human liver cytochrome P450 enzymes.	2004 May	15370959
Bladder emptying over a period of 10-45 years after a traumatic spinal cord injury.	2004 Nov	15326470
[Dextromethorphan enhances analgesic activity of propacetamol--experimental study].	2005	17037292
High-throughput screening of inhibitory potential of nine cytochrome P450 enzymes in vitro using liquid chromatography/tandem mass spectrometry.	2005	16124035
Characterization of microsomal cytochrome P450-dependent monooxygenases in the rat olfactory mucosa.	2005 Aug	15879494
Effect of dextrometorphan and dextrorphan on nicotine and neuronal nicotinic receptors: in vitro and in vivo selectivity.	2005 Feb	15356218
Multiple P450 substrates in a single run: rapid and comprehensive in vitro interaction assay.	2005 Jan	15626586
MK-801 and dextromethorphan block microglial activation and protect against methamphetamine-induced neurotoxicity.	2005 Jul 19	15987631
Cytochrome P450 2D6 (CYP2D6) inhibitory constituents of Catharanthus roseus.	2005 Jun	15930738
Dextromethorphan-induced neurologic illness in a patient with negative toxicology findings.	2006 Jun 27	16801672
Randomized, controlled trial of dextromethorphan/quinidine for pseudobulbar affect in multiple sclerosis.	2006 May	16634036
Mesenteric artery clamping/unclamping-induced acute lung injury is attenuated by N-methyl-D-aspartate antagonist dextromethorphan.	2006 Nov-Dec	17102908
Bench-to-bedside review: mechanisms and management of hyperthermia due to toxicity.	2007	18096088
Cough mixture abuse as a novel cause of folate deficiency: a prospective, community-based, controlled study.	2007 Apr	17488670
Treatment of the common cold.	2007 Feb 15	17323712
In vitro interaction cocktail assay for nine major cytochrome P450 enzymes with 13 probe reactions and a single LC/MSMS run: analytical validation and testing with monoclonal anti-CYP antibodies.	2007 Jul	17565714
Free energies of binding of R- and S-propranolol to wild-type and F483A mutant cytochrome P450 2D6 from molecular dynamics simulations.	2007 Jul	17333164
Challenges for Australia's Bio/Nanopharma Policies: trade deals, public goods and reference pricing in sustainable industrial renewal.	2007 Jun 1	17543114
Mechanical aspects of a multidirectional, angular stable osteosynthesis system and comparison with four conventional systems.	2008 Apr	18346904
Sex differences in NMDA antagonist enhancement of morphine antihyperalgesia in a capsaicin model of persistent pain: comparisons to two models of acute pain.	2008 Apr	18221780
Sigma ligands, but not N-methyl-D-aspartate antagonists, reduce levodopa-induced dyskinesias.	2008 Jan 8	18281903
Anti-inflammatory effects of dimemorfan on inflammatory cells and LPS-induced endotoxin shock in mice.	2008 Jul	18500357
Functional expression and comparative characterization of nine murine cytochromes P450 by fluorescent inhibition screening.	2008 Jul	18420780
Life-threatening dextromethorphan intoxication associated with interaction with amitriptyline in a poor CYP2D6 metabolizer: a single case re-exposure study.	2008 Jul	18359183
Effects of repeated cycles of sterilisation on the mechanical characteristics of titanium miniplates for osteosynthesis.	2008 Sep	18336967
Effect of fenofibrate on microcirculation and wound healing in healthy and diabetic mice.	2009	19258215
Dextromethorphan reduces oxidative stress and inhibits atherosclerosis and neointima formation in mice.	2009 Apr 1	19189960
Amyotrophic lateral sclerosis.	2009 Feb 3	19192301
Characterization of retrieved orthodontic miniscrew implants.	2009 Jan	19121491
Retrospective analysis of titanium plate-retained prostheses placed after total rhinectomy.	2009 Jan-Feb	19344034
[Bone anchored hearing aids (BAHA)].	2009 Mar	19343390

Patents

Sample Use Guides

In Vivo Use Guide

15-30 mg 3 to 4 times per day (cough) 20-30 mg twice daily (pseudobulbar affect)

Route of Administration: Oral

In Vitro Use Guide

In vitro studies pre- and immature oligodendroglial (OLN-93) cells were subjected to hyperoxic conditions for 48 h after pre-treatment with increasing doses of dextromethorphan.

Substance Class	Chemical Created by `admin` on `Mon Mar 31 17:45:38 GMT 2025` Edited by `admin` on `Mon Mar 31 17:45:38 GMT 2025`
Record UNII	7355X3ROTS
Record Status	`Validated (UNII)`
Record Version

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Related Record	Type

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Dextromethorphan

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BA-2666

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BA 2666

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NSC-751452

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DEXTROMETHORPHAN [VANDF]

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Dextromethorphan [WHO-DD]

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NODEX

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DEXTROMETHORPHAN [MI]

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3-Methoxy-17-methyl-9?,13?,14?-morphinan

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dextromethorphan [INN]

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Classification Tree Code System Code

NDF-RT

N0000181821