Taking TYSABRI
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
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