Pack of 2, New & fresh, original sold by Siamproviding, ships from USA. by USPS with tracking number., Cal Mag D Advanced combines of calcium, magnesium and vitamin D helps to prevent osteoporosis, to build and maintain healthy teeth, bones and overall health., A single serving of Cal Mag D Advanced provides calcified seaweed – sources of calcium and magnesium. It contains more vitamin D than five cups of fortified milk for easy absorption. It also includes magnesium to help regulate calcium levels and promote mineralization., No added artificial colors or preservatives. Three tablets provide more calcium than over two cups of yogurt, more magnesium than found in over two cups of rice, and more vitamin D than found in five cups of fortified milk.