TheraRadar

Pharma Intelligence, Simplified

Data updated: Mar 10, 2026

REZENOPY

NALOXONE HYDROCHLORIDE
Approved 2024-04-19
1
Indication
--
Phase 3 Trials
1
Years on Market

Details

Status
Prescription
First Approved
2024-04-19
Routes
NASAL
Dosage Forms
SPRAY

Companies

Active Ingredient: NALOXONE HYDROCHLORIDE

REZENOPY Approval History

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What REZENOPY Treats

3 indications

REZENOPY is approved for 3 conditions since its original approval in 2024. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Opioid Overdose
  • Respiratory Depression
  • Central Nervous System Depression
Source: FDA Label

REZENOPY Boxed Warning

SERIOUS AND LIFE-THREATENING RISKS FROM USE OF PENTAZOCINE AND NALOXONE TABLETS Addiction, Abuse, and Misuse Because the use of Pentazocine and Naloxone Tablets exposes patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to overdose and death, assess each patient's risk prior to prescribing and reassess all patients regularly for the development of these behaviors and conditions [ see <WARNINGS ]. Life-Threatening Respiratory Depression Serious, life-thre...

REZENOPY Competitors

Pro

10 other drugs also target Opioid receptor. Compare mechanisms, indications, and trial activity.

View all 10 Opioid receptor drugs →
Drug = Competitor name Company = Manufacturer N indic. = FDA-approved indications → Date = Patent/exclusivity expiry

Competitors share the same molecular target (Opioid receptor). Earlier expiry dates signal biosimilar/generic opportunities.

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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.

REZENOPY FDA Label Details

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Indications & Usage

FDA Label (PDF)

Pentazocine and Naloxone Tablets are indicated for the management of pain severe enough to require an opioid analgesic and for which alternative treatments are inadequate. Limitations of Use Because of the risks of addiction, abuse, misuse, overdose, and death, which can occur at any dosage or duration, and persist over the course of therapy, reserve opioid analgesics, including Pentazocine and Naloxone Tablets for use in patients for whom alternative treatment options are ineffective, not tolerated, or would be otherwise inadequate to provide sufficient management of pain.

⚠️ BOXED WARNING

WARNING: SERIOUS AND LIFE-THREATENING RISKS FROM USE OF PENTAZOCINE AND NALOXONE TABLETS Addiction, Abuse, and Misuse Because the use of Pentazocine and Naloxone Tablets exposes patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to overdose and death, assess...

REZENOPY Patents & Exclusivity

Latest Patent: Feb 2041
Exclusivity: Apr 2027

Patents (1 active)

US12514854 Expires Feb 5, 2041

Exclusivity

NP Until Apr 2027
Source: FDA Orange Book

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Data Sources

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