Kirkland Signature Calcium 600mg + Vitamin D - 500 TabsAbout this item Calcium Carbonate 600 mg. Vitamin D3 400 IU USP Verified#Kirkland#Signature#Calcium#600mg#Vitamin·mineralssupplements.shopping·Jan 3, 2023Kirkland Signature Calcium 600mg + Vitamin D - 500 Tabs