The most common side effects of Tysabri are:
Some people may have an allergic reaction to Tysabri. Symptoms include anaphylaxis, hives, itching, breathing problems, chest pain, nausea, flushing, dizziness, and rash. You’ll need to stay at your doctor’s office for about an hour after you get the drug to make sure the reaction doesn’t happen.
- Infections
- Headache
- Fatigue
- Depression
- Joint pain
- Menstrual problems