Medicinal ingredients:
Marine algae multi-mineral complex (lithothamnion corallioides - whole)  800 mg 
Providing: calcium 275 mg
Magnesium   21.3 mg
Vitamin d3 (cholecalciferol)    (333iu) 8.3 mcg

Non-medicinal ingredients:
Hypromellose (capsule ingredient), magnesium stearate (vegetable source).