Powerful calcium combination for bone health An effective blend of citrate and carbonate for easy assimilation Bone-nourishing twosome that won't put a dent in your pocketbook Per GMP guidelines set forth by the FDA, most products are formulated for 24 months from the date of manufacture. Liquids and probiotics are formulated for 12 months. Get the calcium you need for total bone health with effective and economical Swanson Calcium Citrate Complex. Delivering 250 mg of calcium from calcium citrate and calcium carbonate in each serving, this easy-to-assimilate calcium combo is the perfect supplement for all your calcium needs.