Kirkland Signature Calcium 500 mg with D3 & Zinc, 240 Adult GummiesED. 04 2026 Kirkland Signature Calcium Adult Gummies are a delicious way to get the Calcium and Vitamin D needed to help maintain strong bones. These two nutrients work together to support strong bones and teeth, plus Vitamin D and Zinc help to maintain a healthy immune system. Just 2 delicious gummies are all you need to get 500 mg of Calcium, 25 mcg (1000 IU) of Vitamin D, and 7 mg of Zinc per serving. Adequate Calcium and Vitamin D as part of a