What does vitamin D3 do exactly?
Vitamin D3 is found in animal food, particularly (oily) fish. It encourages the uptake of calcium from food in the intestines. Vitamin D3 activates the kidneys and contributes to ensuring your pet has a healthy immune system. Vitamin D3 also sees to it that your cat or dog will develop and maintain strong bones.https://www.yarrah.com/uk/faqs/ingredients/what-does-vitamin-d3-do-exactly/