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While taking TYSABRI, you only have to think about taking your relapsing multiple sclerosis (MS) therapy once every 4 weeks.

TYSABRI administration: How a TYSABRI infusion works

The process of IV infusion is a common and effective way of administering a fluid medication over a specific period of time — in the case of TYSABRI, about an hour.

Each TYSABRI infusion is given by a healthcare professional at one of many TOUCH-approved locations. These include infusion centers, specially equipped doctors' offices, or infusion clinics within hospitals.

During the infusion, fluid flows from a sterile bag through plastic tubing and a small needle into a vein in your arm. It feels a little like having blood drawn, only the fluid is flowing in the opposite direction.

For many, the infusion process can be a time to relax and unwind.

After the infusion, you'll be observed for another hour to make sure you're not having a reaction that may require medical help. During your treatment, you might like to:

  • Have a friend stay with you to chat
  • Read a book or flip through a magazine
  • Do crossword or Sudoku puzzles
  • Listen to music
  • Work on a laptop
  • Watch a movie
  • Take a nap

Attend an Event
Stay involved in the community, hear the latest news, and meet others with MS.
Find an event
near you
Potential Side Effects
Along with benefits, TYSABRI has risks, like a brain infection called PML.
Read more.
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Important Safety Information

Please see full Prescribing Information (PDF) , including Boxed Warning and
Patient Medication Guide (PDF) .

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