Vegans get vitamin A the long way round: plants supply beta-carotene, and the body turns it into the active vitamin. The conversion is real but not identical in everyone, which is why the orange and dark-green vegetables earn their place.
Vegan Brief·Evidence last reviewed July 15, 2026
This is a summary of the cited evidence, not medical advice.
Plant formProvitamin A carotenoids
Key sourceOrange and dark-green veg
ConversionVaries between people
01
Two forms, two sources
Vitamin A arrives in the diet by two different doors, and only one of them is open to a vegan. The NIH fact sheet, a public-domain US government document, names both.
Primary source 01 / 04
The human diet contains two sources for vitamin A: preformed vitamin A (retinol and retinyl esters) and provitamin A carotenoids
That preformed form is the animal door, and a vegan does not use it. The other door is provitamin A, the plant pigments the body converts into the vitamin itself.
Primary source 03 / 04
Provitamin A carotenoids are plant pigments that include beta-carotene, alpha-carotene, and beta-cryptoxanthin
In practice that argues for eating carotenoids often and across a range of foods rather than trusting a single item: sweet potato, carrots, pumpkin, red pepper, spinach, kale and other dark-green and orange vegetables, ideally with a little fat, which helps absorption. A vegan who does that is not relying on a fragile supply. Vitamin A deficiency is a problem of scarce diets, not of plant-based ones.
Vitamin D on a vegan dietVitamin D is the one almost everyone runs low on in winter, vegan or not. The plant-friendly fix is D2 or lichen D3, plus fortified foods and sensible sun.
Zinc on a vegan dietPlants have zinc; phytates make you absorb less of it. The fix is more intake plus a few kitchen tricks that free the zinc up.
Iron on a vegan dietPlants have iron, just the kind your body absorbs less easily. The government fact sheet quantifies exactly how much less, and what raises the odds in your favor.
Is Vitamin A (retinol and carotene) vegan?Is it vegan? · Vitamin A comes in two forms with two different back-stories. One can be pulled from fish liver, the other is pure plant pigment, and the label decides which you are getting.
Is Beta-carotene (E160a) vegan?Is it vegan? · Beta-carotene is the orange in carrots, bottled as a colour and a supplement. The pigment is plant or lab-made; the only animal risk is the capsule it sometimes rides in.
Frequently asked
Can vegans get enough vitamin A?
Yes. Vegans get vitamin A from provitamin A carotenoids, mainly beta-carotene, which the NIH describes as plant pigments the body converts to vitamin A. Orange and dark-green vegetables such as sweet potato, carrot, pumpkin, spinach and kale are the reliable sources, and a little fat at the meal improves absorption.
Is beta-carotene the same as vitamin A?
Not quite. Beta-carotene is a provitamin A carotenoid, which the body converts into vitamin A in the intestine. The conversion is efficient enough to meet needs on a plant diet, but the NIH notes conversion rates can vary between people, which is why eating a range of carotenoid-rich vegetables regularly is the safe approach.
The primary sources
The documents this page quotes. Read them yourself.
