Amazon.com: Maxi Health 500 mg Calcium Supplement with Vitamin D3 (1000 IU) and Magnesium (500 mg) - Bone, Teeth and Joint Support for Men and Women - 240 Tablets - One to
International unit - Wikipedia
VITAMIN D3 1.25MG (50,000IU) Dietary Supplement
Vitamin D3 | 1250 mcg (50,0000 IU) | Bone & Immune Support – Hargraves Online Healthcare
Calcium Carbonate 600 mg + Vitamin D 125 IU 60 Caplets|Puritan's Pride