Blackmores Total Calcium Magnesium + D3 contains 3 forms of calcium and magnesium to supports calcium absorption in bones, vitamin D3 levels in the body and helps maintain bone mineralisation and strength.Blackmores Total Calcium Magnesium + D3 contains 3 forms of calcium and magnesium. It supports calcium absorption in bones, vitamin D3 levels in the body and helps maintain bone mineralisation and strength. Blackmores Total Calcium Magnesium + D3 also supports bone health, muscle function and general health and wellbeing.• Supports vitamin D3 levels in the body• Helps maintain bone mineralisation and strength