B vitamins are known to work together in harmony, such as in a B complex supplement that contains B12, folic acid, B6, and other essential vitamins. Vitamin C and iron can also be taken together, as Vitamin C helps the body absorb more iron from both food and supplements. Additionally, Vitamin K and calcium can be taken together to support skeletal and heart health. However, according to Dr.
Airey, it is not efficient to take these supplements together as the body's ability to absorb vitamins will be reduced. Therefore, it is important to keep your supplement regimen simple and set yourself up for success. The Office of Dietary Supplements at the National Institute of Health has a form called My Dietary Supplement and Medicine Record that you can print and complete. This form will help you track the daily value (DV) of each nutrient that a supplement or serving of food adds to your average daily diet.