Caltrate 600+D contains calcium carbonate the most concentrated form of calcium available. Caltrate 600+D contains Vitamin D to help your body absorb calcium. Caltrate 600+D is sugar free, salt free, lactose free and preservative free. Caltrate 600+D can be taken with your multivitamin. Table shape has been specially designed for easier swallowing. Suitable for sodium restricted diets.