Let's take a minute to talk about your medication.

This is Tysabri. It treats certain types of multiple sclerosis and Crohn's disease. It may have other uses, too.

Tysabri is given as an infusion into your vein, usually in your arm. Each dose takes about an hour. It is often given every 4 weeks. Before each dose, you will be asked questions to make sure Tysabri is still right for you. Allergic reactions are possible at any time, but they usually happen within 2 hours from the start of your dose. Your nurse will check on you often during the dose to make sure that you feel okay. He or she will also tell you what symptoms to report. 

Most people tolerate this medicine well. Common side effects include headache, nausea, and diarrhea. You could also have pain in the arms, legs, joints, or stomach area. These effects are normal if they are mild, and should go away. Other common side effects include respiratory infections, urinary tract infections, and vaginitis. Some people feel a little tired or depressed. If these or other side effects become reasons you want to stop taking this medicine, please talk to your doctor or pharmacist.

As with any medicine, rare but more serious side effects can happen. With Tysabri, these include liver problems, an increased risk of infections, and a risk of a very rare brain infection. To help keep this medicine safe for you, both you and your healthcare team will enroll in a safety program. It's called the 'TOUCH Prescribing Program', and it has important information. 

For best results with Tysabri, ask about helpful support services that are available. Also, be sure to read the Medication Guide for full information.