Friday, July 10, 2026

Drug profile · INN

methylnaltrexone

methylnaltrexone (RELISTOR) is a mu opioid receptor antagonist.

TGA: approved
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Drug details — methylnaltrexone
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Quick answer

methylnaltrexone (RELISTOR) is a mu opioid receptor antagonist.

Key facts

INN methylnaltrexone
Brand RELISTOR
Mechanism Mu opioid receptor antagonist

Mechanism of action

Mu opioid receptor antagonist

Approval history

Authority Status Date
TGA approved

Frequently asked questions

What is methylnaltrexone?

methylnaltrexone (RELISTOR) is a mu opioid receptor antagonist.

What is the brand name for methylnaltrexone?

RELISTOR is a marketed brand name for methylnaltrexone. Check FDA Drugs@FDA for the current US label holder and prescribing information.