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When Should I Take My Vitamins?

When To Take Vitamins
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Vitamin supplements can be a good insurance policy; even though the bulk of our nutrition should come from food, it isn’t always possible to eat maximally to support our health. Plus, there is evidence our food is not as loaded with nutrients as it once was. Vitamin supplements today are perhaps more important and useful than they have ever been. 

Knowing this, and knowing that you want to make the most of your investment in vitamin supplements, taking your vitamins when they will be most effective is important. The timing of when you take vitamins can indeed influence how well they are absorbed and utilized by your body. Some vitamins are best absorbed when taken with food, while it matters less when you take other kinds of supplements. 

Here are a few general guidelines:

Fat-Soluble Vitamins (A, D, E, and K)

These vitamins are soluble in fat, so they are better absorbed when consumed with dietary fats. Taking them with a meal that contains healthy fats can enhance their absorption. However, be cautious not to consume excessive amounts of fat, as this can lead to unnecessary calorie intake.

Water-Soluble Vitamins (B Vitamins and Vitamin C)

Water-soluble vitamins are generally well-absorbed regardless of whether they are taken with food. However, taking them with a meal can help prevent stomach discomfort that some people might experience when taking these vitamins on an empty stomach.


Iron absorption is influenced by various factors, including the type of iron (heme vs. non-heme) and other dietary components. Consuming vitamin C-rich foods or beverages alongside iron-rich foods or supplements can enhance iron absorption. On the other hand, calcium-rich foods or supplements can inhibit iron absorption, so it’s advisable to separate the intake of iron and calcium sources.


Calcium absorption can be affected by factors such as vitamin D intake and the presence of other minerals in the diet. Taking calcium supplements with meals can improve absorption, but large doses of calcium should be divided throughout the day to avoid interference with other mineral absorption.


Magnesium absorption is influenced by the body’s magnesium levels and the presence of other minerals in the diet. It’s generally recommended to take magnesium supplements with meals to enhance absorption and reduce the risk of gastrointestinal discomfort.


Zinc absorption can be impacted by dietary factors, such as the presence of phytates and fiber. Taking zinc supplements with a meal can help improve absorption.


Related Articles

Vitamins & Mineral: Am I Nutrient Deficient?

Your Questions About Vitamins Answered


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