A natural source of calcium since 1894. Umbria, Italy. Sodium free. Drink lightly effervescent Sanfaustino instead of ordinary bottled water to easily add more calcium to your daily routine. Eight glasses provide up to 80 percent of the adult calcium RDA. All-natural, sodium free Sanfaustino also provides natural bicarbonate, for healthy digestion. Make Snfaustino part of your healthy lifestyle.