Kal - Ultra Cal-Citrate+ - 120 Tablets Kal Ultra Cal Citrate Plus is a synergistic 2:1 ratio of Calcium and Magnesium plus Vitamins D-3 and K-2 in easy-to-swallow tablets. Vitamin K2 (MK-7) from natto is intended to provide nutritive support for normal bone formation. High potency Vitamin D-3 enhanc