Vitamin A is a fat-soluble vitamin. Vitamin A is involved in vision, immune function and cellular differentiation.
For proper evaluation, we look at the form, amount per dose and actual intended use.
Vitamin A – What is it?
Vitamin A is involved in vision, immune function and cellular differentiation.
Where is it used?
It is found in multivitamins and specific formulas.
Forms & Label
Retinol/retinyl esters and provitamin A carotenoids such as beta-carotene.
On the label, we examine the form, actual amount per serving and any standardization.
What do we know from the available evidence?
Preformed Vitamin A and beta-carotene are not equivalent forms.
The evidence varies by goal, and we should not equate marketing with clinical data.
Safety & Precautions
Excessive preformed Vitamin A can be toxic and requires particular caution during pregnancy.
Pregnancy, breastfeeding, chronic conditions or medication use are reasons to seek individualized professional advice.
Frequently Asked Questions
1. Does everyone need to take it?
No. It makes sense when it serves a specific need or goal.
2. Does a higher dose mean a better result?
Not necessarily. The appropriate form and dose matter more.
3. How do I compare two products?
We compare the form, amount per serving, overall composition and number of servings.
In Brief
Vitamin A should be assessed according to its actual role, the evidence and the dose.