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Opioid drugs are known to cause opioid-induced constipation (OIC) by inhibiting gastric emptying and decreasing peristaltic waves leading to delayed absorption of medications and more water absorption from the feces. That can result in hard and dry stool and constipation for some patients. [2]
If possible, alternate medications should be prescribed that avoid the side effect of constipation. [citation needed] Given that all opioids can cause constipation, [6] it is recommended that any patient placed on opioid pain medications be given medications to prevent constipation before it occurs. Daily medications can also be used to promote ...
Methylnaltrexone (MNTX, brand name Relistor), used in form of methylnaltrexone bromide (INN, USAN, BAN), is a medication that acts as a peripherally acting μ-opioid receptor antagonist that acts to reverse some of the side effects of opioid drugs such as constipation without significantly affecting pain relief or precipitating withdrawals.
Long-term opioid use can cause opioid-induced hyperalgesia, which is a condition in which the patient has increased sensitivity to pain. [101] All of the opioids can cause side effects. [70] Common adverse reactions in patients taking opioids for pain relief include nausea and vomiting, drowsiness, itching, dry mouth, dizziness, and constipation.
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Constipation has a number of structural (mechanical, morphological, anatomical) causes, namely through creating space-occupying lesions within the colon that stop the passage of stool, such as colorectal cancer, strictures, rectocoles, anal sphincter damage or malformation and post-surgical changes. Extra-intestinal masses such as other ...
Naloxegol (INN; PEGylated naloxol; [4] trade names Movantik and Moventig) is a peripherally acting μ-opioid receptor antagonist developed by AstraZeneca, licensed from Nektar Therapeutics, for the treatment of opioid-induced constipation. [5] It was approved in 2014 in adult patients with chronic, non-cancer pain. [6]
The opioid epidemic took hold in the U.S. in the 1990s. Percocet, OxyContin and Opana became commonplace wherever chronic pain met a chronic lack of access to quality health care, especially in Appalachia. The Centers for Disease Control and Prevention calls the prescription opioid epidemic the worst of its kind in U.S. history.