Hi Sandy, I love Epsom salt! I read the Magnesium in the epsom salt is suppose to be good for CRPS. I use it in a foot bath/massager every night for 20 minutes and I use it in a full bath weekly. When my feet are really bad I use it 2-3X a day. It just relaxes me enough to take the edge off or relax enough to fall asleep. Good luck. momof4