... disks. Pre surgical testing revealed elevated liver problems,a decrease in potassium levels and a marked change in cholesterol levels (elevated). The doc took her off it and said it would be as much as two weeks before it is normal again IF it is due to the Zanaflex elevating the liver enzymes. Problem is, it is one week before surgery and it is now postponed. Has anyone else experienced elevated liver enzymes because of Zanaflex?