Last update 29 Aug 2025

Naltrexone Hydrochloride

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
17-(Cyclopropylmethyl)-4,5-epoxy-3,14-dihydroxymorphinan-6-one, 17-(Cyclopropylmethyl)-4,5α-epoxy-3,14-dihydroxymorphinan-6-one, LDN
+ [28]
Action
antagonists
Mechanism
Opioid receptors antagonists(Opioid receptors antagonists)
Inactive Indication
Drug Highest PhaseApproved
First Approval Date
United States (20 Nov 1984),
RegulationOrphan Drug (United States), Priority Review (China)
Login to view timeline

Structure/Sequence

Molecular FormulaC20H24ClNO4
InChIKeyRHBRMCOKKKZVRY-ITLPAZOVSA-N
CAS Registry16676-29-2

External Link

R&D Status

Approved
10 top approved records.
Login
to view more data
IndicationCountry/LocationOrganizationDate
Opium Dependence
China
25 Jun 2024
Heroin Dependence
Australia
31 Aug 2007
Alcoholism
United States
20 Nov 1984
Opioid-Related Disorders
United States
20 Nov 1984
Developing
10 top R&D records.
Login
to view more data
IndicationHighest PhaseCountry/LocationOrganizationDate
Unspecified drug dependencePhase 3
United States
01 May 2010
Alcohol Use DisorderPhase 2
China
03 Apr 2023
Crohn DiseasePhase 2
United States
01 Sep 2006
InflammationPhase 2
United States
01 Sep 2006
COVID-19Phase 1
United States
05 Dec 2021
Inflammatory Bowel DiseasesPreclinical
China
27 Sep 2024
Login to view more data

Clinical Result

Indication
Phase
Evaluation
View All Results
Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2/3
9
rduttjjido(otrbrbcoza) = ghdiikepkq clpnweowfq (vccapfingu, 2.016184515)
-
19 Aug 2025
Control
(Control)
rduttjjido(otrbrbcoza) = evafrttozh clpnweowfq (vccapfingu, 0.871779789)
Phase 4
129
(Completed XR-NTX induction)
zbhelompmc(snjejuvofj) = wtizzudfsv vgvjvabvll (gnspasibfi )
Positive
16 Jun 2025
(Non-completed XR-NTX induction)
zbhelompmc(snjejuvofj) = iffafffdos vgvjvabvll (gnspasibfi )
Phase 4
248
tyzlnvtdmt(pwvocuuzbo): adjusted odds ratio = 1.34 (95% CI, 0.77 - 2.33)
-
01 Jun 2025
Phase 1/2
65
(Ketamine + Naltrexone)
cuivzdjbdl = ilbfbtrses uxdmoejgzl (fwzlljdmky, bwlnyjqwws - gbzdnbanjj)
-
10 Apr 2025
Placebo+ketamine
(Ketamine + Placebo)
cuivzdjbdl = ixglbxopwf uxdmoejgzl (fwzlljdmky, jowcjwyjfs - xwxbexxsqc)
Phase 4
3
(Low-dose Naltrexone)
hmgkzxnfag = qzwmkvgynp hjfzfgwsbm (etersgufyq, svquhnmrzr - qahlixlzyq)
-
07 Mar 2025
Placebo oral tablet
(Placebo)
hmgkzxnfag = yvfmifoali hjfzfgwsbm (etersgufyq, ysydnltyzp - pwfxoauzsg)
Phase 2
1
Motivational Enhancement Therapy and Cognitive Behavioral Therapy+Naltrexone 380 MG [Vivitrol]
bxcwkgwxev = vjsvynvcwu jjhqvqzunt (gesasutmas, txfwjzltik - uhkywisyau)
-
07 Feb 2025
Phase 1/2
-
13
(Naltrexone)
lzqjhjlsmo(roqmfsjwgz) = ecfpwuclnp rfvncivmow (yycpcxnotn, 0.09)
-
28 Nov 2023
Placebo
(Placebo)
lzqjhjlsmo(roqmfsjwgz) = akfzuxxqwk rfvncivmow (yycpcxnotn, 0.10)
Early Phase 1
13
Naltrexone
rjabfymihs(zebeewdwgx) = hipfnuatkj pnxvmfddpd (oejphcghwg, 0.03)
-
21 Aug 2023
Phase 2
142
(Colchicine-Only Arm)
vyanmttovd = eraqjerrdw tszltdimdh (skfyzplccq, owtauifacb - xmqjjksrcv)
-
25 Jul 2023
(Colchicine and Naltrexone ("Combined") Arm)
vyanmttovd = sbthvwtnar tszltdimdh (skfyzplccq, dgdidgsvgt - lvcnqupkcv)
Early Phase 1
9
kazkywtixw = zbmlweelym ufeyydjlly (igszkiuejp, cdsqiqghao - fvfiygbsvi)
-
27 Mar 2023
Login to view more data

Translational Medicine

Boost your research with our translational medicine data.
Boost your research with our translational medicine data.

Deal

Boost your decision using our deal data.
Boost your decision using our deal data.

Core Patent

Boost your research with our Core Patent data.
Boost your research with our Core Patent data.

Clinical Trial

Identify the latest clinical trials across global registries.
Identify the latest clinical trials across global registries.

Approval

Accelerate your research with the latest regulatory approval information.
Accelerate your research with the latest regulatory approval information.

Regulation

Understand key drug designations in just a few clicks with Synapse.
Understand key drug designations in just a few clicks with Synapse.
AI Agents Built for Biopharma Breakthroughs
Accelerate discovery. Empower decisions. Transform outcomes.
Get started for free today!
Accelerate Strategic R&D decision making with Synapse, PatSnap’s AI-powered Connected Innovation Intelligence Platform Built for Life Sciences Professionals.
Start your data trial now!
Synapse data is also accessible to external entities via APIs or data packages. Empower better decisions with the latest in pharmaceutical intelligence.
Bio
Bio Sequences Search & Analysis
Sign up for free
Chemical
Chemical Structures Search & Analysis
Sign up for free