Support your immune system for 24 hours with Ester-C The Better Vitamin C Tablets. Ester-C is a unique, exclusive form of Vitamin C designed to stay in your white blood cells for 24-hours, providing you with around-the-clock immune system support. Ester-C is non-acidic and stomach friendly, so you can take it all year long to support your heart, joints and skin, too. Take Ester-C every day, one 1,000mg tablet - just once a day, and your immune system will "C" the difference! These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.