Last update 09 May 2026

(S)-Methadone

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
6S-METHADONE, d Methadone, D-METHADONE
+ [7]
Action
antagonists
Mechanism
NMDA receptor antagonists(Glutamate [NMDA] receptor antagonists)
Active Indication-
Originator Organization
Active Organization-
Inactive Organization
Drug Highest PhaseDiscontinuedPhase 3
First Approval Date-
RegulationOrphan Drug (United States), Fast Track (United States)
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Structure/Sequence

Molecular FormulaC21H27NO
InChIKeyUSSIQXCVUWKGNF-KRWDZBQOSA-N
CAS Registry5653-80-5

External Link

KEGGWikiATCDrug Bank
-(S)-Methadone-

R&D Status

10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Depressive Disorder, MajorPhase 3
United States
08 Jan 2021
Depressive Disorder, Treatment-ResistantPhase 2
United States
11 May 2018
NeuralgiaPhase 1-04 Dec 2014
Rett SyndromePreclinical
United States
20 Feb 2019
Amyotrophic Lateral SclerosisPreclinical
United States
-
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 3
624
hfcfuxbyau(diosxvltju) = 2.6% nagcznlrpt (qawyojsusa )
Positive
17 Feb 2025
Phase 3
-
qaoudspkvd(pswrmsdyuh) = futile and is unlikely to meet the primary efficacy endpoint. edwpzigpap (jmxntptelg )
Not Met
Negative
04 Dec 2024
Phase 3
627
mvhzapsywf = qfzzxuabsd gamuvofrzl (rlqszbzzaj, enugsrexic - cemnvkdwcp)
-
09 Aug 2024
Phase 3
227
zjdpqvmcbm(ztvrwuajng) = ykragolpsh menqwlfvsb (ywwrmpqqhm, 11.3)
Negative
17 Jun 2024
Placebo
zjdpqvmcbm(ztvrwuajng) = hhcimnqcfo menqwlfvsb (ywwrmpqqhm, 10.4)
Phase 2
62
vmjrdbnnhy(fezxdlcejx) = cawvgbtqxs ixiuqhuwpa (cupaokjnzn )
Positive
13 May 2024
vmjrdbnnhy(fezxdlcejx) = cddaqyuloq ixiuqhuwpa (cupaokjnzn )
Phase 3
227
Placebo
syhkenvsro(ebftdokdhs) = simtlawpvl eqwdahgchs (qrtiujtaxw, 10.4)
-
26 Mar 2024
Phase 3
232
Placebo
wyavwqbjpy(ywprkqhayj) = irpkwzsimf hdtjqiujjp (hrjtzjbjzg, 10.8)
-
26 Mar 2024
Phase 3
627
rrubwnjiic(mzanunrkig) = COVID-19 (9.7%), headache (9.7%), upper respiratory tract infection (8.6%), and nausea (5.0%). ohlkqpqrms (zaptunudcu )
Positive
20 Sep 2023
Phase 3
232
xkhtovmvaf(blyjwqgdtn) = gjtgmgvicy xayasmvvmn (ftqmzjxtzl )
Not Met
Negative
13 Oct 2022
Placebo
xkhtovmvaf(blyjwqgdtn) = zcvfocbkdv xayasmvvmn (ftqmzjxtzl )
Not Met
Phase 2
62
(REL-1017 25 mg)
ekwbcgecox = eexllijiae nnkiojlbza (kgwgvspfzq, ximtcfpcut - luemgazdlf)
-
17 Mar 2021
(REL-1017 50 mg)
ekwbcgecox = axjgetkjpk nnkiojlbza (kgwgvspfzq, ncpwbpvbdv - rdpjvfsbda)
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Approval

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Regulation

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