So it looks like the Ty is what's making me cold. I just took 2 Advil's and will see how that works for chills. I think its helping already. Iv'e been tired during the day lacking motavation + little more back pain then usual. I hope I get use to Ty like Rebif after a while. What I loved about Copaxone - zero sides and worked great for 2 1/2 yrs - then poof. I hoestly feel warmer now from the Advil. We'll see. Generic brand too. Ibu is Ibu. 500 count for $15