Reader Question: What about Tysabri and the flu shot?
A. In my article "Should I Get the Flu Shot if I Have MS?" I stated: "Do not receive a vaccine or flu shot while you are being treated with Tysabri, unless your doctor has told you to." This information originates from the MedinePlus entry on Natalizumab Injection (Tysabri). That entry says (verbatim): "do not have any vaccinations without talking to your doctor." MedlinePlus is a site of the US National Library of Medicine and the National Institutes of Health (NIH), which often has information on drugs and supplements posted from several different sources.