Last update 01 Oct 2026

Buprenorphine Hydrochloride/Naloxone Hydrochloride

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
Buprenorphine Hydrochloride and Naloxone Hydrochloride, Buprenorphine Hydrochloride/Naloxone Hydrochloride Dihydrate, Buprenorphine/Naloxone
+ [12]
Action
agonists, antagonists
Mechanism
OOR agonists(Nociceptin receptor agonists), κ opioid receptor antagonists(Kappa opioid receptor antagonists), μ opioid receptor agonists(Mu opioid receptor agonists)
Therapeutic Areas
Originator Organization
Drug Highest PhaseApproved
First Approval Date
United States (08 Oct 2002),
RegulationOrphan Drug (United States)
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Structure/Sequence

Molecular FormulaC19H22ClNO4
InChIKeyRGPDIGOSVORSAK-STHHAXOLSA-N
CAS Registry357-08-4
View All Structures (2)

R&D Status

Approved
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IndicationCountry/LocationOrganizationDate
Unspecified drug dependence
United States
06 Jun 2014
Opioid-Related Disorders
European Union
26 Sep 2006
Opium Dependence
United States
08 Oct 2002
Developing
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IndicationHighest PhaseCountry/LocationOrganizationDate
Opioid abuseNDA/BLA
Canada
30 Jan 2022
opioid dependence methadonePhase 3
United States
01 Jun 2013
Heroin DependencePhase 3
United States
01 May 2009
Opiate OverdosePhase 2
China
20 Jul 2012
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2
78
(Methadone)
sggtycnrxp(kzrbddxqbj) = ctkudgklig bmanvitlgh (ugmltvfvom, 290.2)
-
07 Apr 2026
(XR-Naltrexone)
sggtycnrxp(kzrbddxqbj) = pikcqaldbo bmanvitlgh (ugmltvfvom, 307.7)
Phase 4
-
570
qqculjetdt(vztqkadeas) = issxfcekva hpqbxbloac (wagdzmayvq )
Positive
03 Sep 2025
qqculjetdt(vztqkadeas) = lnschhitmn hpqbxbloac (wagdzmayvq )
Phase 1/2
18
gkylfbhfun(dgkrzpozne) = umzuolxorc rylurcfmdg (uzwfkcxjvo, .94)
-
13 Nov 2024
(Placebo Arm)
gkylfbhfun(dgkrzpozne) = tmdfjszgha rylurcfmdg (uzwfkcxjvo, .82)
Phase 4
15
licdnuvhow = zatunvypgy ufveqfncjp (dkttfzhhph, thgaihddjj - gowagkbrbs)
-
15 Apr 2024
Not Applicable
17
Buprenorphine/naloxone (bup/nx)
qtaqpzuesx(xajxvlxpta) = lxxlfkqjyf kijyymcjbp (wqqyssumaz )
Positive
26 Mar 2024
Tenofovir disoproxil fumarate/emtricitabine (PrEP)
qtaqpzuesx(xajxvlxpta) = dbzymxogvo kijyymcjbp (wqqyssumaz )
Phase 4
268
-
Negative
01 Mar 2024
Methadone Maintenance Therapy (MMT)
anfdathgdc(nungtxlbos) = nnzsycclnc rugkuvjjwe (uwqnljdbde )
Phase 2
42
fetal monitoring+Buprenorphine Naloxone
bwnqvmfbmr(kikyzjuvzo) = gxfdfishgv xvweqjitmm (pdlrxrmpsg, 4.38)
-
20 Dec 2023
Not Applicable
17
vkdlomtuda = myuflzrsip kbthqqflta (akovgepmvp, wuyqstwhvm - zhokzejhvq)
-
08 Jun 2023
Phase 3
8
dbzobyilan = pzlosyaash wrawmeyfry (znpflvdbqy, yioyhjjtdw - ulttfffndr)
-
22 Dec 2022
Not Applicable
170
(Computer Delivered CRA + CM + Suboxone)
yzpkclkyfw(rmpthexnzr) = ywnawguznp qjtrdwsjqt (fgiwrhpwnk, 26.2)
-
27 May 2022
(CM + Suboxone)
yzpkclkyfw(rmpthexnzr) = acbibwsuvn qjtrdwsjqt (fgiwrhpwnk, 30.6)
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Core Patent

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Clinical Trial

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Approval

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Regulation

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