DESCRIPTION: Plant source calcium & vitamin C with vitamin D3, vitamin K2, magnesium and synergistic minerals. It is derived from Lithothamnion (calcified red algae seaweed sustainably harvested from pristine Icelandic waters), kale, spinach and collard greens. Easy to digest & Utilize While many calcium supplements are sourced from limestone rock or animal bones, Alive! Calcium provides calcium and trace minerals that may be easier for the body to digest, absorb and utilize. Promote Healthy Bones Adequate calcium intake throughout life, as part of a well-balanced diet and regular exercise, could perhaps reduce the risk of osteoporosis. Alive! Plant Source Calcium provides 1,000 mg of calcium per serving (100 % DV), vitamin C, vitamin D3, vitamin K2, magnesium and supportive minerals. -Max Absorption: Vitamin D3 enhances calcium absorption and utilization. -Bone Density: Magnesium & vitamin C help maintain bone density. -Vitamin K2 (MK-7) directs calcium to the bones where it s needed most. -Additional Minerals: Boron and strontium assist calcium in promoting healthy bones. Directions: Take 4 tablets daily, preferably with food. For best results, take 2 tablets twice daily with food. Do not exceed recommended dose.