Thompsons ultra C 1000mg tablets are designed to assist in the relief of symptoms associated with colds and flu. Vitamin C is essential to healthy collagen, the most abundant protein in the body, which is necessary in maintaining the integrity of blood vessels, bones, teeth and gums. Vitamin C helps to protect the cells against oxidation and free radical damage. This pH-balanced, high potency Vitamin C complex is formulated to be gentle on the stomach and easily absorbed by the body. Vitamin C is best taken in regular small amounts so a sustained released formula will ensure longer lasting therapeutic action. Bioflavanoids improve the absorption of vitamin C. Vegetarian and Vegan friendly.