Silver water uses up Vitamin E, an antioxidant; and uses up Selenium. Supplement with natural Vitamin E, mixed tocopherols. Take Selenium sparingly and cut back if fingernails start getting weak and coming off in a shell-shape off the tip. I would as a prudent measure space out silver colloid consumption 1/2 hour before or after eating and drinking. Beyond that, use of probiotics as those found in active yogurt and active saurkraut can help revivify any friendly gut bugs diminished in any way by silver colloid use. Blessings!