Vitamin A is a fat-soluble vitamin needed for normal vision, immune function, skin health, reproduction and healthy mucous membranes. It comes in two main dietary forms: preformed Vitamin A such as retinol, and provitamin A carotenoids such as beta-carotene.
Vitamin A is essential, but it is also a vitamin where dose matters. High-dose preformed Vitamin A can build up in the body and may be harmful, especially during pregnancy.
What Does Vitamin A Do?
- Supports normal vision
- Supports immune system function
- Supports skin and mucous membranes
- Supports reproduction and growth
- Acts through retinoids and carotenoid pathways
Retinol vs Beta-Carotene
- Retinol / retinyl palmitate: preformed Vitamin A, more potent and more likely to cause toxicity at high doses.
- Beta-carotene: provitamin A carotenoid from plants; the body converts it as needed.
Recommended Merchant Options
Nutricost Vitamin A Softgels
Nutricost lists Vitamin A softgels with 10,000 IU per serving. This is a high-strength product and should be used carefully.
Dr. Berg Whole Food Multivitamin
Dr. Berg Whole Food Multivitamin includes Vitamin A as beta-carotene as part of a broader multinutrient formula. This is not a standalone Vitamin A supplement.
iHerb Vitamin A
iHerb has a wide range of Vitamin A products, including retinol, cod liver oil, beta-carotene and multivitamin formulas.
Food Sources of Vitamin A
Preformed Vitamin A is found in liver, fish liver oils, eggs and dairy. Beta-carotene is found in carrots, sweet potato, pumpkin, spinach, kale, mango and orange-coloured vegetables.
Safety and Cautions
Do not use high-dose retinol products casually. Pregnant people, people trying to conceive, and those using retinoid medications should be especially cautious. Avoid combining high-dose Vitamin A with liver, cod liver oil and multivitamins unless advised.
FAQ
Is Vitamin A good for eyes?
Yes, Vitamin A supports normal vision, especially low-light vision.
Is beta-carotene safer than retinol?
Beta-carotene is generally safer because the body converts it as needed, although smokers should be cautious with high-dose beta-carotene supplements.
Can Vitamin A be toxic?
Yes. High-dose preformed Vitamin A can build up and cause toxicity.
Final Thoughts
Vitamin A is essential, but high-dose products need caution. Compare Nutricost Vitamin A, Dr. Berg Whole Food Multivitamin or Vitamin A at iHerb.
Health disclaimer: This article is general information only. Avoid high-dose Vitamin A if pregnant, trying to conceive, taking retinoids, eating liver often, or using cod liver oil unless medically advised.
















