Caltrate 600 is the convenient way to get the calcium you need every day in just two tablets. Taking a multivitamin and eating a well-balanced diet is a great start to a healthy lifestyle, but you still may not be getting adequate levels of calcium to keep your bones healthy. Caltrate 600 is the perfect addition to your multivitamin. Caltrate 600 is also ideal for pregnant and nursing women who may not be getting enough calcium, but already get adequate levels of Vitamin D from a prenatal vitamin.