TheraRadar
Data updated: May 26, 2026

PARNATE (tranylcypromine sulfate)

CNS Approved 1961-02-21

PARNATE is indicated for the treatment of Major Depressive Disorder.

Source: FDA Label • ADVANZ PHARMA

How PARNATE Works

Parnate functions as an irreversible inhibitor of the enzyme monoamine oxidase (MAO). While its exact mechanism as an antidepressant is not fully understood, it is presumed to work by increasing the activity of monoamine neurotransmitters in the central nervous system. By blocking the MAO enzyme, the drug potentiates these neurotransmitters to produce its therapeutic effect.

2
Indications
--
Phase 3 Trials
1
Priority Reviews
65
Years on Market

Details

Status
Prescription
First Approved
1961-02-21
Routes
ORAL
Dosage Forms
TABLET

Companies

Active Ingredient: TRANYLCYPROMINE SULFATE

PARNATE Approval History

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Original
New Indication
New Form
Label Update
23 FDA actions from 1961 to 2018 · 1 indication expansions
Jan 2018 SUPPL
Label · Labeling
May 2010 SUPPL
Label · Labeling
Nov 2009 SUPPL
Label · Labeling

What PARNATE Treats

1 indications

PARNATE is approved for 1 conditions since its original approval in 1961. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Major Depressive Disorder
Source: FDA Label

PARNATE Boxed Warning

SUICIDAL THOUGHTS AND BEHAVIORS and HYPERTENSIVE CRISIS WITH SIGNIFICANT TYRAMINE USE Suicidal Thoughts and Behaviors Antidepressants increased the risk of suicidal thoughts and behaviors in pediatric and young adult patients in short-term studies. Closely monitor all antidepressant-treated patients for clinical worsening, and for emergence of suicidal thoughts and behaviors [ see Warnings and Precautions (5.1) ]. PARNATE is not approved for use in pediatric patients [ see Use in Specific Popula...

PARNATE Competitive Set

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Key Completed Trials

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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.

PARNATE FDA Label Details

Indications & Usage

FDA Label (PDF)

PARNATE is indicated for the treatment of Major Depressive Disorder.

⚠️ BOXED WARNING

WARNING: SUICIDAL THOUGHTS AND BEHAVIORS and HYPERTENSIVE CRISIS WITH SIGNIFICANT TYRAMINE USE Suicidal Thoughts and Behaviors Antidepressants increased the risk of suicidal thoughts and behaviors in pediatric and young adult patients in short-term studies. Closely monitor all antidepressant-treated...

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Data Sources

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