Calcium and vitamin D3 form a powerful combination that promotes healthy teeth and bones. It helps in supplementing your daily calcium requirements (along with other meals). They work synergistically to provide additional significant health benefits. Calcium is the most abundant mineral in bone, necessary for its structure, strength, and ability to maintain healthy bone mass.HealthOxide calcium promotes the healthy functioning of your nervous system and helps maintain stronger bone health. Your joint structure and joint mobility improve, you feel more energetic and your skeletal structure becomes robust to take on the wear and tear of everyday fatigue.