This day calls for a special celebration of thanks. My daughter-in-law who works at Health Food Heaven in Squamish BC is very knowledgeable and her choice for me was SierraSil. The improvement was amazing. I can move about without a walker, wheelchair or cane. I have much more energy and endurance and sleep at night is the best in years. When I leave Canada it will be with an ample supply of SierraSil in my bags. In returning home to Ohio, I hope to introduce my doctor to this product that may benefit others and I indeed, may be able to fulfill my Doctors hope to be her first centurion patient, with the help of SierraSil.