A 1:1 ratio of calcium and magnesium Calcium-Magnesium Malate provides a balanced blend of calcium and magnesium. Magnesium also supports heart, bone, lung, and muscle health.* How much magnesium and calcium do you need? The appropriate intake ratio of calcium to magnesium varies, with some scientific literature supporting a 2:1 ratio (twice as much calcium as magnesium), with other experts recommending a 1:1 ratio. Thorne's Calcium-Magnesium Malate provides a 1:1 ratio.Thorne's logo, text, trademarks, graphics, videos and photo images are the property of Thorne and are used with permission. Copyright © 2023*FDA Disclaimer: The information about this product and statements made are provided by the manufacturer, except customer reviews which are not evaluated. See www.thorne.com for information about the relationship between this product and any claims made. Results may vary from person to person based on body size and other factors, and the effectiveness is not guaranteed for you. Always seek the advice of your healthcare professional about taking dietary, nutritional, herbal or homeopathic supplements.