Solaray Calcium Citrate 1000 mg With Vitamin D3 Capsule provides the essential calcium your body needs, and is enhanced with vitamin D-3, designed to help the body assimilate this important mineral more efficiently. Chelated to natural citric acid, Solaray Calcium is gentler on digestion, perfect for persons with low stomach acid and includes a nutrient-rich herbal base of watercress, dandelion root and parsley for additional support. Calcium also plays a lesser known but equally vital role in cardiovascular, muscle, and nerve health. The calcium in Solaray Calcium Citrate with Vitamin D-3 is bonded with natural citric acid and is specially formulated for people with low stomach acid.