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Tysabri Dosing Information

Regardless of your age, weight, or other factors, the dosage of Tysabri® (natalizumab) is the same for everyone. When treating multiple sclerosis (MS) or Crohn's disease, the standard dose of Tysabri is 300 mg administered intravenously (by IV) every four weeks. Your healthcare provider will administer the medication in a healthcare setting. It typically takes about an hour to receive your full dose.
Other important dosing information for Tysabri includes the risk for allergic reactions. This is why your healthcare provider will closely monitor you during your infusion and for at least an hour after you have received your dose. Make sure to let your healthcare provider know if you experience any signs of an allergic reaction, such as:
  • Headaches
  • Dizziness
  • Chills
  • Fever
  • Nausea and vomiting.
(For more dosing information, click Tysabri Dosage. This full-length article provides more specific dosing guidelines, with details on how to get the most out of each dosage.)
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