Drug

Fenfluramine

As of the edition of 20 October 2026, Fenfluramine is a small molecule: marketed, first approved in 2020 (US); acts on HTR1D, HTR2C and SIGMAR1; US protection ends in 2036.

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

The drug

Status
Marketed; latest approval 2022
Kind
Small molecule
Brand name
Fintepla
First approved
25 June 2020 (US)
Approvals on record
5 in 3 regions
Holder of the most recent approval
UCB; 3 holders in all
Withdrawn from market
1 January 1997 (in some regions)
Registered trials
26, 3 stopped early
Disease areas
Nervous system; Inherited and neonatal; Mental health; Chemically induced; Heart and blood vessels; Nutrition and metabolism

US protection

US protection ends in 2036.

The last listed US drug-substance patent ends in 2036. The application that gives this date is held by UCB.

This is the US only, and it is not the date generics or biosimilars can enter.

The exact date and the listings behind it

In the product

5 listings count towards this date. The exact date and each listing are in the product.

See the exact date and the 5 listings behind itRequest access. Nothing is shown until you do.

Companies that need a new molecule because of this drug

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

Companies on route B for this drug

In the product

3 company-target rows are on route B because of Fenfluramine.

Targets

GeneProteinUniProt
HTR1D5-hydroxytryptamine receptor 1DP28221
HTR2C5-hydroxytryptamine receptor 2CP28335
SIGMAR1Sigma non-opioid intracellular receptor 1Q99720

Registered trials

PhaseTrialsCompletedActiveStopped early
Phase not stated4020
Phase 13201
Phase 24210
Phase 311722
Phase 44120
All trials26

Who has held its approvals

CompanyRoleYears
UCBOriginator, Applicant and Lead sponsor of trials2016 to now