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Data updated: May 26, 2026

METHADOSE (methadone hydrochloride)

Pain Approved 1973-03-14

METHADOSE contains methadone, an opioid agonist indicated for the: detoxification treatment of opioid addiction (heroin or other morphine-like drugs). maintenance treatment of opioid addiction (heroin or other morphine-like drugs), in conjunction with appropriate social and medical services. Limitations of Use Methadone products used for the treatment of opioid addiction in detoxification or maintenance programs are subject to the conditions for distribution and use required under 21 CFR, Title...

Source: FDA Label • SPECGX LLC
3
Indications
--
Phase 3 Trials
53
Years on Market

Details

Status
Prescription
First Approved
1973-03-14
Routes
ORAL
Dosage Forms
TABLET, FOR SUSPENSION, TABLET, CONCENTRATE

Companies

Active Ingredient: METHADONE HYDROCHLORIDE

METHADOSE Approval History

1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
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1986
1987
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2021
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2026
Original
New Indication
New Form
Label Update
85 FDA actions from 1973 to 2025
Dec 2025 SUPPL
Label · Labeling
Dec 2025 SUPPL
Label · Labeling
Jun 2025 SUPPL
Label · Labeling

What METHADOSE Treats

3 FDA approvals

Originally approved for its first indication in 1973 . Covers 3 distinct patient populations.

  • Other (3)

METHADOSE Boxed Warning

LIFE-THREATENING RESPIRATORY DEPRESSION, LIFE-THREATENING QT PROLONGATION, ACCIDENTAL INGESTION, ABUSE POTENTIAL, INTERACTIONS WITH DRUGS AFFECTING CYTOCHROME P450 ISOENZYMES and TREATMENT FOR OPIOID ADDICTION Life-Threatening Respiratory Depression Respiratory depression, including fatal cases, have been reported during initiation and conversion of patients to methadone, and even when the drug has been used as recommended and not misused or abused [see Warnings and Precautions ( 5.1 )]. Proper ...

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Clinical Trial Registry

10 trials
Trial Sponsor ID Phase Status Title
NCT06962306 OPAL-Cleft Pro00117598 Ph 4 recruiting Optimizing Perioperative Analgesia to Lower Pain Following Cleft Palate Surgery
NCT07226076 Pro00147447 Ph 3 recruiting Methadone in TKA for Post-op Pain and Opioid Reduction
NCT06877858 857972 Ph 1 recruiting MethaLoad Dose-Finding Study
NCT06086171 SHS-An-4-2023 Ph 4 completed Perioperative Methadone Compared to Placebo in Elderly Hip Fracture Patients
NCT05831345 CHUB-Methadone Ph 3 recruiting Intraoperative Methadone for the Prevention of Postoperative Pain
NCT04680286 METACEBO 23956082 2020-002945-41 Ph 3 terminated Intraoperative Methadone in Children Undergoing Surgery
NCT00930332 SC22 CAN-NCIC-SC22, CDR0000641372 Ph 1 terminated Methadone Hydrochloride as First-Line Therapy in Treating Patients With Chronic Neuropathic Cancer Pain
NCT02989597 MAPS results posted 2016-6985 Ph 4 terminated Intraoperative Methadone Administration for Improved Pain Control in Spinal Fusion Patients
NCT02531906 I 262314 NCI-2015-01338, I 262314 Ph 1 completed Gabapentin, Methadone Hydrochloride, and Oxycodone Hydrochloride in Improving Quality of Life in Patients With Stage II-IV Head and Neck Cancer During Chemoradiation
NCT01795495 results posted IRB13-0036 Active Ph 2 completed Methadone vs Magnesium in Spinal Fusion
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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

METHADOSE FDA Label Details

Indications & Usage

FDA Label (PDF)

METHADOSE contains methadone, an opioid agonist indicated for the: detoxification treatment of opioid addiction (heroin or other morphine-like drugs). maintenance treatment of opioid addiction (heroin or other morphine-like drugs), in conjunction with appropriate social and medical services. Limitations of Use Methadone products used for the treatment of opioid addiction in detoxification or maintenance programs are subject to the conditions for distribution and use required under 21 CFR, Title 42, Sec 8 [see Dosage and Administration ] . METHADOSE is an opioid agonist indicated for the: Detox...

⚠️ BOXED WARNING

WARNING: LIFE-THREATENING RESPIRATORY DEPRESSION, LIFE-THREATENING QT PROLONGATION, ACCIDENTAL INGESTION, ABUSE POTENTIAL, INTERACTIONS WITH DRUGS AFFECTING CYTOCHROME P450 ISOENZYMES and TREATMENT FOR OPIOID ADDICTION Life-Threatening Respiratory Depression Respiratory depression, including fatal c...

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.