Wholistic Pet Ester C is a pure, potent and highly concentrated body ready form of Vitamin C. This unique, patented form of Vitamin C is highly bioavailable, highly effective, yet easy on the stomach. Before you buy other forms of Ester C, compare the strength with Wholistic Pet Ester C. Each teaspoon contains 3945mg Vitamin C and 96mg Calcium. This is the most affordable Ester C on the market!