Vitamin A Dosage

What Is a Reasonable Dose of Vitamin A?

Even though the recommendations for vitamin A intake are confusing, dosing can be quite simple. Simply read the label of the supplement and look for the vitamin A content in terms of the "% Daily Value." All the calculations have been done for you. Assuming you are taking a supplement designed for your age group, make sure your supplement contains 100 percent (or less) of the recommended daily value (less than 100 percent is best, since you probably get some vitamin A through your diet).
Most people in developed countries get plenty of vitamin A through their diets. The amount of vitamin A found in most multivitamins is certainly enough for the average person. Only people with a documented vitamin A deficiency should take more.

Vitamin A Dosing for Specific Uses

Much higher doses may be used to treat documented cases of vitamin A deficiency. In these situations, be sure to follow your healthcare provider's instructions carefully. Never take high-dose vitamin A on your own, without your healthcare provider's approval and supervision, since it can cause significant toxicity.

General Information on Dosing With Vitamin A

Some considerations for people taking vitamin A include the following:
  • With vitamin A, more is certainly not better. Remember, most people get plenty of vitamin A through the diet; supplementation is not considered necessary for the average person.
  • Never exceed the amount recommended on the supplement label unless your healthcare provider specifically recommends that you do so.
  • If you are unsure about anything related to your dosage or vitamin A dosing in general, please talk with your healthcare provider or pharmacist.
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Vitamin A Information

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