High Potency Calcium, Magnesium & Zinc Dietary Supplement Vegetarian Kosher Parve Gluten Free Bluebonnet's Calcium Magnesium Plus Zinc Caplets are specially formulated with a high potency combination of calcium, magnesium, zinc, copper and boron. Plus, L-glutamic acid and horsetail powder. Available in easy-to-swallow caplets for maximum assimilation and absorption.