Absorption of Vitamin C

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The absorption of Vitamin C by the body can vary!

Vitamin c (ascorbic acid) absorption varies depending on its interaction with other vitamins and other substances.

The following are facts and information about how Vitamin C interacts with other substances and absorbed by the body.

Interaction and absorption of Vitamin C

• Body tissue stores of vitamin C are small and easily saturated, with any excess excreted in two to three hours.

• Large doses of vitamin C may interfere with contraceptive pill absorption and reduce its effectiveness.
• Vitamin C helps in the body’s absorption of iron by helping convert dietary iron to a soluble form.
• Calcium and manganese supplements may decrease vitamin C excretion and vitamin C supplements may increase manganese absorption.
• Exposure to cigarette smoke or air pollutants such as ozone and carbon monoxide may deplete vitamin C in the lungs.
• An excess of ascorbic acid (vitamin C) may also cause a burning sensation during urination, diarrhea, skin rash, and nausea.
• It may disturb the absorption and processing of vitamin B12.
• Aspirin, alcohol antibiotics and steroids may increase vitamin C requirements.

  Vitamin C may diminish the response to some antidepressants, and the anticoagulant drug warfarin.

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