Now Foods Acid Comfort 90 lozenges. With millions of Americans suffering from excess stomach acid, the need for a powerful and effective acid reducer has never been more widespread. NOW Acid Redux™, formulated by Scientific Food Solutions, has taken antacids to an entirely new level of protection. This powerful blend of magnesium/potassium hydroxide in combination with vitamins and minerals including ultra low-lead calcium carbonate can be highly effective in reducing stomach acid, while raising our pH levels and soothing sore tissues – three essential elements in maintaining optimal acid levels in our stomach and throughout our body