Learn about the way vitamins work and you may need less of them. Vitamin C helps to absorb iron. If there is an iron deficiency then increase your vitamin C. Vitamin C improves the absorption of other nutrients such as calcium. Vitamin D is also important when it comes to calcium absorption, that is why it is put in milk.

Green and red peppers are on induction and should be consumed for your vitamin C. These peppers have 2-4xs the amount of vitamin C that oranges have.