This is known as calcium ascorbate, and unlike pure ascorbic acid, it is non-acidic. Vitamin C tablets made of calcium ascorbate are also gentler on the stomach, as they do not promote stomach acidity. Moreover, they provide a sound source of calcium. One thing to watch out for is the sugar content of the Vitamin C tablets. Many of these tablets come with sweetened with sugar that can cause problems especially for people with diabetic condition.
Sugar also promotes cavities.
Select a product that is sweetened with pure fruit juices or fructose.