TheraRadar
Data updated: May 26, 2026

PROMETHAZINE W/ DEXTROMETHORPHAN (dextromethorphan hydrobromide)

Respiratory Approved 1985-01-04

PROMETHAZINE W/ DEXTROMETHORPHAN is indicated for the treatment of Common Cold; Nasal Congestion; Sinus Congestion; Cough; Minor Aches and Pains; Headache; Fever; Sore Throat.

Source: FDA Label • PHARMOBEDIENT
1
Indication
--
Phase 3 Trials
41
Years on Market

Details

Status
Prescription
First Approved
1985-01-04
Routes
ORAL
Dosage Forms
SYRUP

PROMETHAZINE W/ DEXTROMETHORPHAN Approval History

1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
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2001
2002
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2005
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2015
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2019
2020
2021
2022
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2024
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2026
Original
New Indication
New Form
Label Update
20 FDA actions from 1985 to 2006
Jun 2006 SUPPL
Label · Labeling
Jul 1997 SUPPL
Mfg · Manufacturing (CMC)
Oct 1991 SUPPL
Label · Labeling

What PROMETHAZINE W/ DEXTROMETHORPHAN Treats

8 indications

PROMETHAZINE W/ DEXTROMETHORPHAN is approved for 8 conditions since its original approval in 1985. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Common Cold
  • Nasal Congestion
  • Sinus Congestion
  • Cough
  • Minor Aches and Pains
  • Headache
  • Fever
  • Sore Throat
Source: FDA Label

PROMETHAZINE W/ DEXTROMETHORPHAN Competitive Set

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Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

Drugs Similar to PROMETHAZINE W/ DEXTROMETHORPHAN

3 of 20

FDA-approved drugs for similar conditions. Compare mechanisms and indications to understand treatment alternatives.

IMMPHENTIV
PHENYLEPHRINE HYDROCHLORIDE
5 shared
Hikma
Shared indications:
CoughNasal CongestionSore Throat +2 more
PHENYLEPHRINE HYDROCHLORIDE AND PROMETHAZINE HYDROCHLORIDE
PHENYLEPHRINE HYDROCHLORIDE
5 shared
Hikma
Shared indications:
CoughNasal CongestionSore Throat +2 more
PHENYLEPHRINE HYDROCHLORIDE IN 0.9% SODIUM CHLORIDE
PHENYLEPHRINE HYDROCHLORIDE
5 shared
Dr. Reddy's
Shared indications:
CoughNasal CongestionSore Throat +2 more
📋

Clinical Trial Registry

8 trials
Trial Sponsor ID Phase Status Title
NCT02651116 CHPA DXM results posted A6531002 CHPA DXM Ph 4 terminated Dextromethorphan Pediatric Acute Cough Study
NCT03480009 DexMab results posted STUDY19020221 Ph 3 completed Dextromethorphan as a Novel Non-opioid Adjunctive Agent for Pain Control in Medication Abortion
NCT01441102 MiDME2 results posted 110244 11-EI-0244 Ph 1, Ph 2 completed Dextromethorphan for Diabetic Macular Edema
NCT02860962 Pro00052508 Ph 1 completed A Trial of Dextromethorphan for Treatment of Major Depressive Disorder
NCT01218620 NCI-2012-02916 NCI-2012-02916, CDR0000685426 Ph 1 completed Gamma-Secretase/Notch Signalling Pathway Inhibitor RO4929097 in Treating Patients With Advanced Solid Tumors
NCT02182336 1220.32 Ph 1 completed Effects of BI 201335 NA on Cytochrome P450 and P-glycoprotein Activity Using a Probe Drug Cocktail in Healthy Volunteers
NCT01017939 CR017128 COU-AA-015 Ph 1 completed A Drug-Drug Interaction Study of Abiraterone Acetate Plus Prednisone With Dextromethorphan and Theophylline in Patients With Metastatic Castration-Resistant Prostate Cancer
NCT01441986 DXM/AMT 0533-DXM Ph 2 completed Dextromethorphan, Amantadine and Glucose Homeostasis in Diabetes Subjects
🔬

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.

PROMETHAZINE W/ DEXTROMETHORPHAN FDA Label Details

Indications & Usage

PROMETHAZINE W/ DEXTROMETHORPHAN is indicated for the treatment of Common Cold; Nasal Congestion; Sinus Congestion; Cough; Minor Aches and Pains; Headache; Fever; Sore Throat.

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Data Sources

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