What is essential to take with vitamin D? Calcium and vitamin D: a partnership. Calcium and vitamin D is the dynamic duo that works together to strengthen and protect your bones. For years, healthcare providers have recommended that postmenopausal women take calcium and vitamin D supplements to prevent osteoporosis, a bone-thinning disease that is a major cause of devastating fractures in old age. Research linking calcium supplements to heart attack and stroke caused many to take vitamin D supplements alone for prevention. “Calcium supplements can increase calcification in the arteries and predispose people, especially women, to heart disease. “That’s why we always prefer dietary calcium. However, some people get adequate dietary calcium but are low in vitamin D.” Source : https://www.google.com/amp/s/health.clevelandclinic.org/do-you-really-need-a-vitamin-d-supplement-2/amp/