Dietary Supplement. Eggshell Calcium With Magnesium & Vitamin D3 Featuring ESC® Membrell® BONEhealth™ features 100% natural ESC® EggShell Calcium for optimum bone health.*. Multiple Human Clinical Trials Show Eggshell Calcium Improves Bone Mineral Density†. Builds Bone Density in 4-8 Months†. Nearly 20% More Absorbable Than Other Forms of Calcium Carbonate†. No Toxic Heavy Metals Vegetarian Capsules 800-749-1291 †Human clinical studies available upon request *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to dia.