The New Kirkland Signature Calcium 600 mg. with Vitamin D3 is a high-quality supplement designed for adult individuals interested in maintaining good bone and joint health. This product contains calcium D-glucarate, vitamin D3 (cholecalciferol), and calcium carbonate as its active ingredients, with an added bonus of magnesium for overall wellness. Each tablet is gluten-free and made in the United States, ensuring a safe and effective dosage of 600 mg of calcium and 400 IU of vitamin D3. This pack of 500 tablets will last for a long time, with an expiration date of 08/2026, providing consistent support for your nutritional needs.