Calcium 600 mg plus D3 Tablets, 60 ct, QC90167 Sale! This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Compare to Caltrate. Calcium is an important mineral for helping to support bone health. Vitamin D3 is added to assist with helping to absorb calcium. No added yeast or artificial flavors and gluten-free.