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RELISTOR®
(methylnaltrexone bromide) Subcutaneous Injection
RELISTOR (methylnaltrexone bromide) Subcutaneous Injection, a peripherally-acting muopioid receptor antagonist, is a sterile, clear and colorless to pale yellow aqueous solution. The chemical name for methylnaltrexone bromide is (R)-N-(cyclopropylmethyl) noroxymorphone methobromide. The molecular formula is C21H26NO4Br, and the molecular weight is 436.36. Each 3 mL vial contains 12 mg of methylnaltrexone bromide in 0.6 mL of water. The excipients are 3.9 mg sodium chloride USP, 0.24 mg edetate calcium disodium USP, and 0.18 mg glycine hydrochloride. During manufacture, the pH may have been adjusted with hydrochloric acid and/or sodium hydroxide.
The structural formula is:
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Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have severe or ongoing diarrhea, stomach pain that will not go away, or nausea or vomiting that are new or worsening symptoms.
Less serious side effects may include:
This is not a complete list of side effects and others may occur. Tell...
Read All Potential Side Effects and See Pictures of Relistor »
Last reviewed on RxList: 8/13/2010
This monograph has been modified to include the generic and brand name in many instances.
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