There is time for every thing under the sun. Taking your daily supplement is not an exception. Some people have asked several question on what is the right time for taking supplement. Should I take all of my supplements at once first thing in the morning, or is it better to take them throughout the day? Does it matter whether or not you have eaten before taking supplements?

I think in most cases it’s fine to split up your daily supplements, and it might even be a good idea, especially if you have a half-dozen or more pills in your regime. I generally advise taking them with a meal containing fat for best absorption and least stomach irritation. This is particularly important for the fat-soluble vitamins (A, D, E and K). Many vitamins and mineral supplements can cause nausea, heartburn and other gastric disturbances, especially when taken on an empty stomach.

There are no rules about the best time of day to take them. My advice is to do so when they most agree with you. Many people find that it is easier to remember to take pills of any kind as part of a morning routine, so taking them with breakfast is a popular option. However, taking too many supplements on an empty stomach or with a light breakfast is a recipe for indigestion. If you experience that, try taking them with lunch or dinner.

Here’s my advice for taking specific antioxidant vitamins and minerals:

  • Vitamin C: 200 to 500 mg (divided into two doses) per day. Vitamin C is water soluble and any amount not used by the body quickly passes out of it. Consider higher dosages if you are under extra stress, living in smoke-filled or polluted environments, or not getting at least five servings of fruits and vegetables as part of your daily diet.
  • Vitamin E: 400 IUs of mixed natural tocopherols (or at least 80 mg of mixed tocopherols and tocotrienols) a day. Since vitamin E is fat soluble, it must be taken with food containing fat to be absorbed. I take vitamin E at lunch or dinner.
  • Selenium: 200 micrograms a day. Selenium is a trace mineral with antioxidant and anticancer properties. Selenium and vitamin E facilitate each other’s absorption, so take them together. Doses of selenium above 400 micrograms a day may not be healthy.
  • Mixed carotenes: 15,000 IUs a day. I recommend a natural form, which is easily found in health food stores. Read the label to make sure it gives you lycopene, the red pigment in tomatoes that helps prevent prostate cancer, and lutein, which can protect against cataracts and macular degeneration. I take mine at breakfast.

To lessen or prevent any side effects, follow these rules:

  • Take your supplements during or after a meal, unless directed otherwise, and drink plenty of fluids as well.
  • Take as indicated. Your supplements may be recommended or packaged for morning, noon or evening dosages, based on your individual health needs. For maximum benefit, take them at the time of day indicated on the package.
  • Some supplements may interact with prescription medications. Read labels carefully and speak with a pharmacist if you have any concerns.

Andrew Weil, M.D.

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