 If you want to improve your heart health, your digestive health, and even reduce or eliminate the effects of stress, I encourage you, try the CalMax formula. All you have to do is pick up the phone and call 1-800-818-9748. And when you do call today, you're also going to get that free book. It's called The User's Guide to Calcium and Magnesium. And folks, this book is packed with vital information about why your calcium needs change with age. Calcium's role in cardiovascular health.