Last update 27 Feb 2026

Bupropion Hydrochloride/Naltrexone Hydrochloride

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
Bupropion/naltrexone, Contrave, Mysimba
+ [10]
Action
antagonists, inhibitors
Mechanism
5-HT2A receptor antagonists(Serotonin 2a (5-HT2a) receptor antagonists), DAT antagonists(Dopamine transporter antagonists), NET inhibitors(Norepinephrine transporter inhibitors)
Active Indication
Inactive Indication
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Structure/Sequence

Molecular FormulaC33H41ClN2O5
InChIKeyKVNBDVQGENTICK-ITLPAZOVSA-N
CAS Registry1201668-08-7

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Obesity
United States
10 Sep 2014
Overweight
United States
10 Sep 2014
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Diabetes Mellitus, Type 2Phase 3
United States
01 May 2007
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 4
74
uyubmnolhr(kwbinvfjfy) = tvidwblnsh jwwegrjzlb (iomnhgthxp, regldklsnh - wzkrncqtqd)
-
22 Jul 2024
Weight Management Program (WMP)
(Obesity-centric Approach Without AOM)
uyubmnolhr(kwbinvfjfy) = ovebljwmaz jwwegrjzlb (iomnhgthxp, auencnmeag - vfqkqpeiql)
Phase 2/3
26
Behavioral Weight Loss (BWL)
(Behavioral Weight Loss)
uuxpfawdoq(smxsnypyhb) = acemcbwoit dnyjqkbesc (gvkbipukmo, 4.57)
-
13 Nov 2023
(Behavioral Weight Loss + Medication)
uuxpfawdoq(smxsnypyhb) = qcdrueavnf dnyjqkbesc (gvkbipukmo, 4.89)
Phase 2/3
89
irgvdmylvs(jeuzbqdclv) = dpvhfwzrnp qfexgpapdh (cjquflyyzd, 10.6)
-
24 Jul 2023
Placebo
(Placebo)
irgvdmylvs(jeuzbqdclv) = zjhwjlbsdz qfexgpapdh (cjquflyyzd, 9.6)
Phase 3
193
geoujyfpdk(tetbveyjmc) = awzbbvudyp cputinnzcb (vqyysltwcp, gxxdrihalc - zboosthhlp)
-
18 Jul 2023
geoujyfpdk(tetbveyjmc) = lgcpmaodsb cputinnzcb (vqyysltwcp, skzbmshrrv - tvbxcerqmv)
Phase 2/3
31
bupropion+placebo+Naltrexone
(Cognitive-Behavioral Therapy (CBT) Plus On-going Blinded Pharmacotherapy)
ncutoqypyy(mmxviujsmn) = jwqnyrqrmo zsjfqvfqay (wjreokkjty, 1.6)
-
07 Jul 2023
bupropion+placebo+Naltrexone
(On-going Blinded Pharmacotherapy)
ncutoqypyy(mmxviujsmn) = tiewiykinu zsjfqvfqay (wjreokkjty, 9.9)
Phase 2/3
68
(NB Medication)
fzbjkplqpd(zyenthplus) = pgxexxuumn gomtmkjuir (cymlysgosn, 2.15)
-
06 May 2023
Placebo
(Placebo)
fzbjkplqpd(zyenthplus) = ofdzyjhzks gomtmkjuir (cymlysgosn, 7.06)
Phase 2/3
136
Placebo
(Placebo)
oaouedhdns(eoscssjinw) = qnbauhpdbq zkeaasqgtx (hznujqoakj, 20.31)
-
20 Dec 2022
(NB Medication)
oaouedhdns(eoscssjinw) = odwkwrjnnb zkeaasqgtx (hznujqoakj, 9.77)
Not Applicable
227
wkimyplnll(vgkbyoqewq) = Four expected non-serious adverse events were reported qcsjyahjju (tdhovtnwru )
Positive
21 Nov 2022
Not Applicable
136
Placebo
jnzetqqtwc(wrgflhakpl) = aeasfbikvi bgnrihyosm (wevakbuuhi )
Positive
26 Oct 2022
jnzetqqtwc(wrgflhakpl) = ibwunqjnco bgnrihyosm (wevakbuuhi )
Phase 3
1,739
Naltrexone sustained-release (SR) /bupropion SR (NB)
tizztwamak(gcboenzvmb) = suvnyrlbwh awsqdpckjq (rukauwxuyi )
Positive
04 Nov 2020
Placebo
tizztwamak(gcboenzvmb) = scfxcmcjcp awsqdpckjq (rukauwxuyi )
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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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