Stem cell symptoms and conditions

My 44 year old, otherwise very healthy husband has been taking Lipitor (10mg) for several years. Currently been showing ALS-like symptoms. Left foot dragging, muscle cramps, twitches, etc. We are headed to Duke University to find out of he has ALS. He is off of Lipitor for 3 weeks now, taking CoQ10 and lots of vitamin C. If anyone else has had these symptoms and they've been rectified, could you share how long it took and how soon you began to feel the initial improvement? Thanks KCC>