NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,098 terms related to cancer and medicine.
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- methylnaltrexone bromide
- listen (MEH-thul-nal-TREK-sone BROH-mide)
A drug used to relieve certain side effects caused by treatment with opiods (pain killers similar to morphine), such as constipation (hard, dry stools), itching, and low urine flow. Methylnaltrexone bromide binds to opioid receptors outside the brain and may block the side effects of opioid drugs without affecting their ability to relieve pain. Methylnaltrexone bromide is a type of peripheral opioid receptor antagonist. Also called Relistor.