How should I take Relistor (methylnaltrexone)?

Relistor (methylnaltrexone) comes in the form of a liquid that is injected under the skin. It is usually taken once every other day, given by your doctor or a nurse, or you may inject it yourself after proper training. Injections may be given in the upper arm, stomach, or thigh. Each vial and disposable needle should be used only once and then disposed properly. Dosage may be adjusted according to your weight and medical conditions, but do not change your dosage of Relistor or of any other medications without first talking to your doctor. If you develop any new or unusual symptoms while using Relistor, talk to your doctor right away.

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