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The usual schedule is one dose every other day, as needed, but no more frequently than one dose in a 24-hour period.1

RECOMMENDED DOSE1

Patients whose weight falls outside of these ranges should be dosed at 0.15 mg/kg. The injection volume for these patients should be calculated using one of the following:

  • Multiply the patient weight in pounds by 0.0034 and round up the volume to the nearest 0.1 mL
  • Multiply the patient weight in kilograms by 0.0075 and round up the volume to the nearest 0.1 mL
  • RELISTOR is available in single-use vials for subcutaneous injection1
  • No dose adjustment required in elderly patients1
  • No dose adjustment required in patients with mild or moderate renal or hepatic impairment1
  • Dose reduction by one half is recommended in patients with severe renal impairment (creatinine clearance less than 30 mL/min)1
  • The effect of severe hepatic impairment or end-stage renal impairment requiring dialysis on the pharmacokinetics of methylnaltrexone has not been studied1


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