Drug

Ramosetron

As of the edition of 20 October 2026, Ramosetron is a small molecule: marketed, first approved in 1996 (JP); acts on HTR3A, HTR3B and HTR3C and 2 more.

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

The drug

Status
Marketed; latest approval 1996
Kind
Small molecule
Brand name
Irribow
First approved
10 July 1996 (JP)
Approvals on record
3 in 1 region
Holder of the most recent approval
Astellas
Registered trials
44, 0 stopped early
Disease areas
Digestive system; Cancer; Urinary and reproductive; Blood and lymph; Bones, joints and muscles; Heart and blood vessels

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

1 company-target row on route B because of this drug.

Companies on route B for this drug

In the product

1 company-target row is on route B because of Ramosetron.

Targets

GeneProteinUniProt
HTR3E5-hydroxytryptamine receptor 3EA5X5Y0
HTR3B5-hydroxytryptamine receptor 3BO95264
HTR3A5-hydroxytryptamine receptor 3AP46098
HTR3D5-hydroxytryptamine receptor 3DQ70Z44
HTR3C5-hydroxytryptamine receptor 3CQ8WXA8

Registered trials

PhaseTrialsCompletedActiveStopped early
Phase not stated141110
Phase 13200
Phase 26400
Phase 38600
Phase 413810
All trials44

Who has held its approvals

CompanyRoleYears
AstellasOriginator and Lead sponsor of trials1996 to now