Max Absorption1,300 mg Plant Source Calcium Per ServingWith Vitamin D3 , Vitamin K2 , Magnesium Dietary Supplement Take Your Routine to The Next Level with Alive ® Plant Source Calcium Alive Calcium is derived from Lithothamnion (calcified red algae seaweed sustainably harvested from pristine Icelandic waters). Easy to Digest & Utilize While many calcium supplements are sourced from limestone rock or animal bones, Alive Calcium provides Aquamin® calcium that may be easier for the body to digest, absorb and utilize. Alive multivitamins were created to give you the support you need to do all that is important to you Get the most from your multi, with potent vitamins and minerals and our food-based blends, and live every day feeling Alive Promotes Healthy Bones Adequate calcium intake throughout life, as part of a well-balanced diet and regular exercise, may reduce the risk of osteoporosis. Plant source calcium provides 1,300 mg of calcium per serving (100% DV) Vitamin D3 enhances calcium absorption and utilization Magnesium helps maintain bone density Vitamin K2 directs calcium to the bones where it's needed most Orchard Fruits™ / Garden Veggies™ powder blend (100 mg per serving)