I don't know...she is doing so well on the Amantadine, I'm afraid to rock the boat. Right now she's even working with a physcial therapist and is getting around with her walker quite well. And as I said, she is completely mentally aware. She can remember things I can't! But if the Amantadine begins to fail her, that would be an option, I think. Wendy Henry CG for Ruth (77/4+)