Tysabri Dosage/Direction for Use

TYSABRI will be given by a doctor experienced in the treatment of MS.
Always use this medicine exactly as the doctor has prescribed. Check with the doctor if not sure.
The recommended dose for adults is 300 mg given once every 4 weeks.
TYSABRI must be diluted before it is given. It is given as a drip into a vein (by intravenous infusion), usually in the arm. This takes about 1 hour.
Information for medical or healthcare professionals on how to prepare and administer TYSABRI is provided at Cautions for Usage.
It is important to continue with the medicine for as long as the patient and the doctor decide that it is helping. Continuous dosing with TYSABRI is important, especially during the first few months of treatment. This is because patients who received one or two doses of TYSABRI and then had a gap in treatment of three months or more, were more likely to have an allergic reaction when resuming treatment.
If the patient misses the dose of TYSABRI: If the patient misses the usual dose of TYSABRI, arrange with the doctor to receive it as soon as possible. The patient can then continue to receive the dose of TYSABRI every 4 weeks.
Always use this medicine exactly as described previously or as the doctor has prescribed. Check with the doctor if not sure.
For any further questions on TYSABRI, ask the doctor.