Drug

Phenelzine

As of the edition of 20 October 2026, Phenelzine is a small molecule: marketed, first approved in 1981 (CA); acts on MAOA and MAOB.

Sources: FDA Orange Book and Purple Book, other approval registers, ClinicalTrials.gov, ChEMBL.

The drug

Status
Marketed; latest approval 1982
Kind
Small molecule
Brand name
Nardil
First approved
31 December 1981 (CA)
Approvals on record
2 in 2 regions
Holder of the most recent approval
Pfizer; 2 holders in all
Registered trials
6, 1 stopped early
Disease areas
Cancer; Mental health; Urinary and reproductive; Skin and connective tissue

US protection

No US approval on record.

With no US approval on record there are no listed US patents or exclusivities.

This is the US only.

Companies that need a new molecule because of this drug

2 company-target rows on route B because of this drug.

Companies on route B for this drug

In the product

2 company-target rows are on route B because of Phenelzine.

Targets

GeneProteinUniProt
MAOAAmine oxidase [flavin-containing] AP21397
MAOBAmine oxidase [flavin-containing] BP27338

Registered trials

PhaseTrialsCompletedActiveStopped early
Phase not stated1100
Phase 12200
Phase 22101
Phase 41010
All trials6

Who has held its approvals

CompanyRoleYears
PfizerApplicant