Calcium Citrate 1000 turns a “no bones day” into a strong bones day! This powerful source of Calcium Citrate — with 1,000 mg to be exact — is a bioavailable form of calcium, which means it promotes better absorption for efficacious support. Calcium is an essential mineral for strong bones & teeth, and adding it to your daily diet is simple with KAL. We test all our products in our own facility to verify their identity, purity and potency for guaranteed quality.