FDA label
What is Relistor used for?
Relistor contains methylnaltrexone bromide. The FDA-approved uses below are quoted from the Indications and Usage section of its DailyMed label.
Source: DailyMed SPL label file dated 2026-10-23. Publisher page
The FDA label for Relistor lists 2 uses: Opioid-Induced Constipation in Adult Patients with Chronic Non-Cancer Pain; Opioid-Induced Constipation in Adult Patients with Advanced Illness.
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Relistor, injection, solution
Indications and Usage, quoted from the label by Salix Pharmaceuticals, Inc. (NDA021964). Cross-references to other label sections are left out.
Opioid-Induced Constipation in Adult Patients with Chronic Non-Cancer Pain
RELISTOR tablets and RELISTOR injection are indicated for the treatment of opioid-induced constipation (OIC) in adult patients with chronic non-cancer pain, including patients with chronic pain related to prior cancer or its treatment who do not require frequent (e.g., weekly) opioid dosage escalation.
Opioid-Induced Constipation in Adult Patients with Advanced Illness
RELISTOR injection is indicated for the treatment of OIC in adult patients with advanced illness or pain caused by active cancer who require opioid dosage escalation for palliative care.
Source: DailyMed label, set id c488fb7c-0a5b-487c-b452-996809d1cb99, version 68, effective May 1, 2024. NDC 65649-551, one of 2 listings for this product.
Questions
What is Relistor used for?
The FDA label for Relistor lists 2 uses: Opioid-Induced Constipation in Adult Patients with Chronic Non-Cancer Pain; Opioid-Induced Constipation in Adult Patients with Advanced Illness.
What drug class is Relistor?
FDA lists methylnaltrexone bromide in the Opioid Antagonist established pharmacologic class.
Does this page cover off-label uses or dosing?
No. This page shows only the Indications and Usage section of the FDA label. Ask a pharmacist or prescriber about dosing.