Sisu Kids Ester-C - 250 mg - Wildberry Flavour - The 250 mg dosage is ideal for children in an easy to chew tablet. A patented, non-acidic form of Vitamin C, developed by binding ascorbic acid with a mineral molecule. Ester C enters the blood stream 2 - 6 times faster than regular Vitamin C and cells retain the benefits up to 4 times longer. Vitamin C is a well-known, powerful antioxidant, available through diet or supplementation, essential for boosting immune functions, balancing cholesterol, assisting the absorption of iron, and necessary for the maintenance of healthy bones, teeth, gums, skin and blood vessels.