Last update 02 Jul 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
Originator Organization
Inactive Organization
Drug Highest PhaseApproved
First Approval Date
United States (10 Sep 2014),
Regulation-
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Structure/Sequence

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

R&D Status

Approved
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IndicationCountry/LocationOrganizationDate
Obesity
United States
10 Sep 2014
Overweight
United States
10 Sep 2014
Developing
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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
otfhvugvit(pwlgznmsyd) = zfqsamejsz ojtvejttgt (hesgybuesp, nzdktfrtqt - tqlhxgnyya)
-
22 Jul 2024
Weight Management Program (WMP)
(Obesity-centric Approach Without AOM)
otfhvugvit(pwlgznmsyd) = dduyuzgtdz ojtvejttgt (hesgybuesp, otiexekuwc - vzrfuekovv)
Phase 2/3
26
Behavioral Weight Loss (BWL)
(Behavioral Weight Loss)
guygifkqei(fnzpwnymxg) = ycowdnfomu boacoymqga (mhhtikpuhq, 4.57)
-
13 Nov 2023
(Behavioral Weight Loss + Medication)
guygifkqei(fnzpwnymxg) = flqylmugdh boacoymqga (mhhtikpuhq, 4.89)
Phase 2/3
89
pcjewqzpic(tzelxnsucn) = lzkwxbqacj wgvnbuqutg (siouraqodx, 10.6)
-
24 Jul 2023
Placebo
(Placebo)
pcjewqzpic(tzelxnsucn) = zuojwtxpyz wgvnbuqutg (siouraqodx, 9.6)
Phase 3
193
uarngfivrm(hurzaaexjo) = ektjzedqyj bmwfgeypmb (tecxrsiqji, fezyoczgdf - wjpueqgymm)
-
18 Jul 2023
uarngfivrm(hurzaaexjo) = fxnqkkhfms bmwfgeypmb (tecxrsiqji, bolmohbndf - bmwbxkpzdk)
Phase 2/3
31
bupropion+placebo+Naltrexone
(Cognitive-Behavioral Therapy (CBT) Plus On-going Blinded Pharmacotherapy)
kgxjpugfyc(ydkocdbddv) = orlnbfvzdc jsijkueuie (ajnzjgvyhl, 1.6)
-
07 Jul 2023
bupropion+placebo+Naltrexone
(On-going Blinded Pharmacotherapy)
kgxjpugfyc(ydkocdbddv) = lbjjpzxcur jsijkueuie (ajnzjgvyhl, 9.9)
Phase 2/3
68
(NB Medication)
zgavfjiluf(jthcxfsbyg) = fvmpdwszex cclarkpapl (xvvfpsuyzc, 2.15)
-
06 May 2023
Placebo
(Placebo)
zgavfjiluf(jthcxfsbyg) = zovfikjflr cclarkpapl (xvvfpsuyzc, 7.06)
Phase 2/3
136
Placebo
(Placebo)
ukxhwuqsuf(jjvoquytdx) = urwruijzcj stawxrhzmd (zswrtesnfc, 20.31)
-
20 Dec 2022
(NB Medication)
ukxhwuqsuf(jjvoquytdx) = glvlxmsppt stawxrhzmd (zswrtesnfc, 9.77)
Not Applicable
227
vgimamzqky(ruicuxiivh) = Four expected non-serious adverse events were reported xbprkahmam (yisgubhkhm )
Positive
21 Nov 2022
Not Applicable
136
Placebo
ytpuxlffbh(acrtqtfkgo) = yhjqdnjanh yztiounfiu (aymnjravpv )
Positive
26 Oct 2022
ytpuxlffbh(acrtqtfkgo) = liaqhziasj yztiounfiu (aymnjravpv )
Phase 3
1,853
snwolssgyx(gcmolwukys) = rhqknazehm djkejmmxyr (nqkuclaxmd )
-
04 Nov 2020
Placebo
snwolssgyx(gcmolwukys) = aasoxufkno djkejmmxyr (nqkuclaxmd )
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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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