Active Ingredient(s): Methylnaltrexone Bromide
FDA Approved: * April 24, 2008
Category: Laxative

* This drug may consist of multiple approval dates, manufacturers, or distributors. If applicable, they would be listed below under "NDC Database Records".

Relistor Overview

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. Because MNTX is a quaternary ammonium cation, it cannot cross the blood–brain barrier, and so has antagonist effects throughout the body, counte...

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Details May Include Instructions, Side Effects, Interactions, Etc. Drug monograph is from Wikipedia. All text is available under the terms of the GFDL (GNU Free Documentation License). Source:

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Relistor (methylnaltrexone bromide) Reviews

I would like some feedback on Relistor 150 mg. I've been prescribed 3 pills every morning for opioid-induced or severe constipation. I am actually a bit nervous about starting it. Any info or feedback would be great! ## Hello, Janet! How are you? This medication is used to treat opiate induced constipation. The FDA lists the typical side effects as possibly including nausea, diarrhea, headache, and dry mouth. What specifically makes you nervous about taking it? If you provide more details others might be able to address such issues for you. Can you please post back and clarify?

what is the medical term for constipation caused by opioids

There is a pill out for constipation caused by opioids. I need it found out. There also is a medical term given to this condition. It's new and I saw it on tv earlier this month. But I can't remember what it was called. I need it so I can tell my doctor to prescribe me the medicine for my constipation caused by the opioids that I take for pain from him. Can you help me? ## Hello, April! How are you? Opioid Induced Constipation. The name of one of the medications is Relistor. The FDA lists its typical side effects as possibly including nausea, dizziness, abdominal pain, diarrhea and tremors. Is there anything else I can help with? ## Mpathia RI: Newest opioid induced constipation med is Movantik, Relister and one other. The bad news is you pay $200.00 at the very least with every...


Possible Dosages for this and Related Drugs:

Methylnaltrexone Bromide
  • Injection: 12mg/0.6ml, 12mg/0.6ml (12mg/0.6ml), 20mg/ml, 8mg/0.4ml, 8mg/0.4ml (8mg/0.4ml)
  • Solution: 12mg/0.6ml (12mg/0.6ml), 8mg/0.4ml (8mg/0.4ml)
  • Tablet: 150mg
Note: Above list includes dosages for all drugs with the same combination of active ingredients.

NDC Database Records for Relistor: (4 results)

Sorted by National Drug Code
  • 65649-150 Relistor 150 mg Oral Tablet by Salix Pharmaceuticals, Inc.
  • 65649-551 Relistor 12 mg/.6ml Subcutaneous Injection, Solution by Salix Pharmaceuticals, Inc.
  • 65649-552 Relistor 8 mg/.4ml Subcutaneous Injection, Solution by Salix Pharmaceuticals, Inc.
  • 65649-553 Relistor Kit by Salix Pharmaceuticals, Inc.

Other drugs which contain Methylnaltrexone Bromide or a similar ingredient: (1 result)

Related Relistor Topics:

Relistor (methylnaltrexone bromide) Reviews
I would like some feedback on Relistor 150 mg. I've been prescribed 3 pills every morning for opioid-induced or seve... 1 reply
Does anyone know if there is a pill form of this drug? I am on alot of meds that cause constipation and this sounds like...

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