Doctor in scrubs

W8MD Diet | COVID-19 portal | Vitamin D | Vaccine | Keto

WikiMD is the world's largest medical encyclopedia with
13,590 pages, 4,139,114 edits & 37,811,477 views.

Free unbiased diet, health and wellness info!


From WikiMD's free health, diet & wellness encyclopedia
Jump to navigation Jump to search

Information about Naloxegol

Naloxegol is a peripherally acting opioid antagonist which is used to treat constipation caused by chronic opioid use.


Liver safety of Naloxegol

Naloxegol has not been linked to serum enzyme elevations during therapy or to clinically apparent liver injury.

Mechanism of action of Naloxegol

Naloxegol (nal ox' ee gol) is a pegylated, semisynthetic opiate receptor antagonist which is similar structurally to naltrexone, but is peripherally restricted and thus has few if any effects on the central nervous system. Naloxegol is a polyethylene glycol (PEG) derivative of alpha-naloxol, an opiate antagonist. The addition of the large PEG molecule to naloxol does not block its engagement with opioid receptors, but does prevent the drug from crossing the blood brain barrier. As a consequence, the opioid antagonist reverses the peripheral but not the central nervous system effects of opiates, such as pain relief and euphoria. In large, preregistration trials, naloxegol was found to increase spontaneous bowel movement frequency and reduce constipation related side effects of opiates used for analgesia in patients with chronic pain.

FDA approval information for Naloxegol

Naloxegol was approved for use in the United States in 2014 and is available as tablets of 12.5 and 25 mg under the brand name Movantik. The recommended dosage is 25 mg once daily, reducing the dose to 12.5 mg daily for intolerance.

Side effects of Naloxegol

Side effects include abdominal pain, diarrhea, nausea, flatulence, anxiety, restlessness and sweating. Withdrawal symptoms can occur, but are rare. In persons not taking opioids, naloxegol has minimal effects on constipation.

Full and partial opiod agonists:

Opiate antagonists:

Cost and Coupons - Naloxegol

Reviews for Naloxegol

Learn more about Naloxegol

Latest research - Naloxegol

Clinical trials

External links

Medicine icon
Medicine icon

This WikiMD article Naloxegol is a stub. If you are familiar with the topic Naloxegol, you can help us. Paid editors welcome!


Naloxegol is part of WikiMD's free ^articles!

^Naloxegol (article) is provided for informational purposes only. No expressed or implied warranties as to the validity of content.
WikiMD is not a substitute for professional advice. By accessing and using WikiMD you agree to the terms of use.
Templates etc. when imported from Wikipedia, are licensed under CC BY-SA 3.0. See full disclaimers.
W8MD weight loss logo

Ad. Tired of being overweight?. W8MD's physician weight loss program can HELP. Tele medicine available