Hey karen3565! I totally get this. I freaked out when I lost my hair (personally it was from the Methotrexate). I even lost half my eyelashes on my left eye! However, I brought it up with my doctor and they placed me on a different supplement, Leucovorin Calcium and changed the time/day I took it so it would cycle better with my Methotrexate dose.
All this being said, I noticed, personaly, that after a few months my body got used to the medication and I didn't lose as much hair. I also did start taking biotin as a backup though, and like KerryW, it helped!
~Monica (RheumatoidArthritis.net Team)