Substance / Medication

Chlorzoxazone

Overview

Active Ingredient
chlorzoxazone
RxNorm CUI
2410

Indications

Chlorzoxazone is indicated as an adjunct to rest, physical therapy, and other measures for the relief of discomfort associated with acute, painful musculoskeletal conditions. The mode of action of this drug has not been clearly identified, but may be related to its sedative properties. Chlorzoxazone does not directly relax tense skeletal muscles in man.

Labeler: REMEDYREPACK INC.Updated: 2026-01-29T00:00:00.000ZFull label on DailyMed

Contraindications

When this intervention should not be used

Chlorzoxazone is contraindicated in patients with known intolerance to the drug.

Indications & Related Conditions

Conditions associated via SNOMED clinical relationships

Administration & Protocol

Dosing, route, and treatment protocol

Detailed dosage and administration information is available in the full FDA drug label.

View full prescribing information on DailyMed

Monitoring & Follow-Up

Biomarkers relevant to this intervention via related conditions

No monitoring biomarkers have been mapped yet. Biomarker-intervention linkages are derived through related conditions and will expand as the knowledge graph grows.

Clinical Trials

5 trials linked to this intervention

5
Total Trials
1
Recruiting
1
With Results

Research Evidence

Published studies and systematic reviews

Sort:
Investigating the Effect of Perioperative Chlorzoxazone on Acute Postoperative Pain After Total Hip and Knee Replacement Surgery.
Skrejborg Peter, Petersen Kristian K, Beck Jacob et al. · Clin J Pain · 2020
PMID: 31977370RCT
Simultaneous phenotyping of CYP2E1 and CYP3A using oral chlorzoxazone and midazolam microdoses.
Hohmann Nicolas, Blank Antje, Burhenne Jürgen et al. · Br J Clin Pharmacol · 2019
PMID: 31222796RCTFull text (PMC)
The effect of chlorzoxazone on acute pain after spine surgery. A randomized, blinded trial.
Nielsen R V, Fomsgaard J S, Siegel H et al. · Acta Anaesthesiol Scand · 2016
PMID: 27306492RCT
Higher chlorzoxazone clearance in obese children compared with nonobese peers.
Gade C, Dalhoff K, Petersen T S et al. · Br J Clin Pharmacol · 2018
PMID: 29618168TrialFull text (PMC)
Effect of piperine on CYP2E1 enzyme activity of chlorzoxazone in healthy volunteers.
Bedada Satish Kumar, Boga Praveen Kumar · Xenobiotica · 2017
PMID: 27670974Trial
Resveratrol Pretreatment Affects CYP2E1 Activity of Chlorzoxazone in Healthy Human Volunteers.
Bedada Satish Kumar, Neerati Prasad · Phytother Res · 2016
PMID: 26680654Trial
Effect of high-dose aspirin on CYP2E1 activity in healthy subjects measured using chlorzoxazone as a probe.
Park Ji-Young, Kim Kyoung-Ah, Park Pil-Whan et al. · J Clin Pharmacol · 2006
PMID: 16397290Trial
Effects of cigarette smoking and carbon monoxide on chlorzoxazone and caffeine metabolism.
Benowitz Neal L, Peng Margaret, Jacob Peyton · Clin Pharmacol Ther · 2003
PMID: 14586387Trial
Comparison of chlorzoxazone one-sample methods to estimate CYP2E1 activity in humans.
Kramer Iza, Dalhoff Kim, Clemmesen Jens O et al. · Eur J Clin Pharmacol · 2003
PMID: 14610624Trial
Impaired 6-hydroxychlorzoxazone elimination in patients with kidney disease: Implication for cytochrome P450 2E1 pharmacogenetic studies.
Nolin Thomas D, Gastonguay Marc R, Bies Robert R et al. · Clin Pharmacol Ther · 2003
PMID: 14663458Trial

Research data from MEDLINE/PubMed

Benefits & Expected Outcomes

Benefits, expected outcomes, efficacy data, and NNT (Number Needed to Treat) are pending physician authorship and evidence review.

Risks & Side Effects

Adverse reaction and safety data for this drug is sourced from the FDA-approved label.

View adverse reactions & drug interactions on DailyMed

Related Symptoms

Symptoms associated with conditions this intervention addresses

No related symptoms have been mapped yet. Symptom linkages are derived through associated conditions.

Alternatives & Comparisons

Alternative treatments, comparison data, and clinical decision support are pending physician authorship.

Medical Disclaimer

This information is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider regarding any medical condition or treatment plan.

Do not start, stop, or change any treatment without consulting your healthcare provider.

Quick Facts

Type
Substance / Medication
Fully Specified Name
Chlorzoxazone (substance)
SNOMED CT
44908000
UMLS CUI
C0008296
RxNorm CUI
2410
Labeler
REMEDYREPACK INC.

Clinical Data

This intervention maps to 1 entities in the Ltrl knowledge graph.

1
Conditions
0
Biomarkers
0
Specialists
0
Symptoms
5
Clinical Trials

Data is sourced from SNOMED CT, UMLS, and the Ltrl clinical knowledge graph. Content sections marked as pending require physician authorship. Consult a healthcare provider before starting any treatment.