Bill from San Fernando, from reading this web site you seem to be somewhat of an authority on Vitamin C in the form of ascorbic acid powder/crystals. I am looking for advice on a friend's Stage 3 Chronic Kidney Disease. Vit C/Ascorbic acid seems to be a viable option for stabilizing/reversing this disease. Certainly, alkalizing would help also. I personally, take the 1/2 tsps of ascorbic acid and baking soda 2 - 3 times a day but, I have normal functioning kidneys. My concern for her would be that the baking soda would contain too much sodium for someone with stg 3 CKD. Is this a viable concern? What could she use in place of the baking soda with the acsorbic acid in order to help buffer and alkalize that would not contain sodium? Your knowledge and assistance is greatly appreciated.