TheraRadar
Data updated: May 26, 2026

ALOSETRON HYDROCHLORIDE

Gastrointestinal Approved 2015-05-04

Alosetron hydrochloride treats women with severe, chronic diarrhea-predominant irritable bowel syndrome (IBS) that has lasted at least six months. It helps patients who have not seen improvement with conventional therapies and experience significant symptoms like intense abdominal pain, frequent urgency, or disability. This medication is specifically used when other causes of gastrointestinal issues have been ruled out and the potential benefits are deemed to outweigh the risks of serious side effects.

Source: FDA Label • RISING

How ALOSETRON HYDROCHLORIDE Works

This drug works by blocking 5-HT3 receptors located on the nerves within the gastrointestinal tract. By inhibiting these receptors, it modulates the enteric nervous system to reduce the gut's hypersensitivity and overactive motor responses. This process helps manage the abnormal pain sensations and rapid colonic transit associated with the condition.

6
Indications
--
Phase 3 Trials
11
Years on Market

Details

Status
Prescription
First Approved
2015-05-04
Routes
ORAL
Dosage Forms
TABLET

ALOSETRON HYDROCHLORIDE Approval History

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
Original
New Indication
New Form
Label Update
64 FDA actions from 2015 to 2025
Aug 2025 SUPPL
Mfg · Manufacturing (CMC)
Dec 2023 SUPPL
Label · Labeling
Sep 2023 SUPPL
Update · REMS

What ALOSETRON HYDROCHLORIDE Treats

2 indications

ALOSETRON HYDROCHLORIDE is approved for 2 conditions since its original approval in 2015. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Irritable Bowel Syndrome
  • Diarrhea
Source: FDA Label

ALOSETRON HYDROCHLORIDE Boxed Warning

SERIOUS GASTROINTESTINAL ADVERSE REACTIONS Infrequent but serious gastrointestinal adverse reactions have been reported with the use of alosetron hydrochloride. These events, including ischemic colitis and serious complications of constipation, have resulted in hospitalization and rarely, blood transfusion, surgery and death. Alosetron hydrochloride is indicated only for women with severe diarrhea-predominant irritable bowel syndrome (IBS) who have not responded adequately to conventional therap...

ALOSETRON HYDROCHLORIDE Competitive Set

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Drugs Similar to ALOSETRON HYDROCHLORIDE

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Active Pipeline

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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.

ALOSETRON HYDROCHLORIDE FDA Label Details

Indications & Usage

FDA Label (PDF)

ALOSETRON HYDROCHLORIDE is indicated for the treatment of Irritable Bowel Syndrome; Diarrhea.

⚠️ BOXED WARNING

WARNING: SERIOUS GASTROINTESTINAL ADVERSE REACTIONS Infrequent but serious gastrointestinal adverse reactions have been reported with the use of alosetron hydrochloride. These events, including ischemic colitis and serious complications of constipation, have resulted in hospitalization and rarely, b...

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LOTRONEX

Full clinical data, patents, trials, and competitive landscape for alosetron hydrochloride.

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Data Sources

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