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Natalizumab is used to treat patients with relapsing forms of multiple sclerosis (MS). This medicine will not cure MS, but may delay physical disability and extend the time between relapses.

This medicine is only available with your doctor's prescription.

Common Brand Names:



Treatment Success Rate

Top 5 Communities
Condition Members Success
Multiple Sclerosis (MS)
Crohn's Disease & Ulcer...
Overall, 86% (316 Members) find Tysabri helpful

Tysabri Reviews

Show: for
Working / Worked
It works great for me and the side effects are not too bad. I am JC virus antibody positive but my doctor is monitoring my antibody level closely and continuing treatment. I have had no relapses in the 5 years that I've been on it.
Had to stop, JC virus positive
Working / Worked
I always feel peaked before the infusion. I have not had an exacerbation since 2008.
Worked well, until I had a relapse while on and I am in the process of switching meds
Working / Worked
I have just received my 90th infusion and have been flare up free since staring :)
3 infusions, scared felt terrible. JC pos. stopped. no treatment as of Feb 2014
quit had jc virus didn't feel the need to push my luck and I felt terrible while taking it 4 months. Wasn't myself
Been on Tysabri now for a year. My body has developed the antibodies for the interferons so Tysabri was my last choice. Now I'm told I have the JC Virus which we all know is the prelude to PML.
Working / Worked
I love tysabri! it hasmade my relapses non-exsistent
LOVE Tysabri, have been on since November 2012 and it has changed my life.
Showing 1 - 10 of 462 Reviews
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  1. Discussion: Tysabri
    I'm on Tysabri and I have not noticed any of those problems :( For me I usually get bladder or yeast infections. [More]
  2. Discussion: Tysabri
    I dont take TY, but this is from their site. [More]
  3. Discussion: Tysabri
    I also have to add that the time limitation for use of Tysabri that I mentioned above is two years beyond which use of Tysabri is not recommended beca... [More]
  4. Discussion: tysabri
    i've been on tysabri 2 years and it hasn't bothered me any. no side effects or anything. [More]
  5. Discussion: tysabri
    Dr talked about tysabri infusions help shrink my lesions ....Is anyone want to share there thoughts? Thanks Cathy [More]