Swanson Calcium Lactate offers support for health bones, GI function and more with 100 mg calcium per capsule. Calcium lactate is a form of calcium that is complexed with lactic acid. Contrary to popular belief, calcium lactate does not contain lactose and can be used safely even if you are lactose intolerant. Plus, beside supplying valuable calcium, it may be soothing on the stomach and can be used to promote gastrointestinal comfort.