* Dietary Supplement * Fast Acting Formula In Shatterproof Bottle * Liquid Calcium From Natural Oyster Shell Nutritionally Supports * Strong and Healthy Bones Twinlab"s Cal-Quick is a natural, quick acting and pleasant tasting liquid calcium supplement. Liquid calcium is absorbed faster than hard calcium tablets. Cal-Quick goes to work quickly in the stomach. Calcium tablets, on the other hand, need binders to hold them together. Naturally, these binders resist dissolving. So it is possible for a calcium tablet to pass through the digestive tract without being completely absorbed. Cal-Quick, however, is specially designed for rapid assimilation and maximum absorption of calcium and vitamin D. Calcium is essential for the formation of strong and healthy bones. Vitamin D improves calcium absorption.