Methylnaltrexone: a subcutaneous treatment for opioid-induced constipation in palliative care patients

Opioid-induced constipation is common in palliative care and causes considerable distress to patients taking opioids. Opioid-induced constipation can be difficult to manage with conventional laxatives, often requiring invasive rectal interventions. A unique bowel intervention linked specifically to opioid-induced constipation in the form of a subcutaneous injection is now available for the management of opioid-induced constipation. This article will examine all aspects of opioid-induced constipation with particular reference to this new management option, methylnaltrexone bromide (Relistor).