American Health - Ester-c Digestion And Immune Health Complex - 1000 Mg - 60 Vegetarian TabletsAmerican health ester c 1000 mg. With probiotics digestion & immune health complex is a combination of ester c and 6 billion bio active probiotics. We specially formulate it with a special coating that creates a protective layer around the tablet as it travels through the digestive tract. The active organisms are shielded from stomach acids and lets them release in the gastrointestinal tract where food nutrients are more readily absorbed. Ester c 1000