Carotenoids: what they are and how to choose

Last reviewed 16 October 2026Next review April 20273 sources

Carotenoids are the pigments that make carrots orange, tomatoes red and spinach deep green — and “eat the rainbow” is genuinely good advice. Carotenoid supplements are often sold with claims that are not authorised. This guide is the honest version: what carotenoids are, the one claim that can actually be made about a product like this and the many that cannot, a safety point that specifically matters if you smoke, and how to choose.

What carotenoids are

Carotenoids are a family of plant pigments. The best-known are beta-carotene and alpha-carotene (orange vegetables), lycopene (tomatoes) and lutein (leafy greens and marigold). They are fat-soluble, so the body absorbs them better alongside some oil — which is why a good carotenoid supplement is usually an oil-based capsule rather than a dry tablet. A “complex” or blend aims to give you the mix you would get from eating a range of coloured produce, rather than one isolated pigment.

The honest part: what can and cannot be claimed

Here is the bit most sellers blur. Carotenoids themselves carry no authorised health claims in Great Britain — not beta-carotene, not lycopene, not lutein. So no one is permitted to tell you a carotenoid supplement does anything for your eyes, your skin or your immunity, and you should be sceptical of any product page that does.

Where a carotenoid product can carry a claim, it is usually because of something added to it. If a blend includes vitamin E at a meaningful level, then one authorised claim applies: “vitamin E contributes to the protection of cells from oxidative stress” — an antioxidant role. That claim attaches to the vitamin E, not to the carotenoids, and only when the product provides at least 15% of the vitamin E reference intake per serving. It is worth understanding the distinction so you know exactly what a label is (and is not) entitled to say.

A safety point that matters if you smoke

This one is important and specific. Large trials of high-dose beta-carotene supplements in smokers found an increased risk of lung cancer, not a reduced one. As a result, the firm guidance is that smokers and former smokers, and people exposed to asbestos, should avoid high-dose beta-carotene supplements. Beta-carotene from food is not the concern — this is about concentrated supplement doses. If that is you, this is a category to be cautious with, and a conversation to have with your GP rather than a decision to make from a product page.

Whole-food blend vs a single isolated carotenoid

Two philosophies exist. One isolates a single high-dose carotenoid (e.g. a standalone lutein or lycopene). The other provides a lower-dose blend from real plants — closer to how carotenoids occur in food, where they come as a mixture. Neither can carry a carotenoid health claim, so choose on which approach you prefer and on transparency: a product that lists the actual milligrams of each carotenoid is being straighter with you than one that just says “antioxidant blend”.

What to look for when buying

• The actual carotenoids and amounts, listed in milligrams — not just “carotenoid complex”.
• An oil base, since carotenoids are fat-soluble and absorb better with fat.
• Any added vitamin E or C — these can carry the authorised claim that they contribute to the protection of cells from oxidative stress, where the carotenoids cannot.
• Allergens and suitability. Oil capsules are frequently made with gelatine (so not vegetarian), and plant blends can carry soya — check both.
• Value per day, especially for premium whole-food blends, which sit at the higher end.

Food first

You get carotenoids for free, in variety, from eating colourful vegetables and fruit — carrots, sweet potato, tomatoes, red peppers, spinach and kale. Because they are fat-soluble, a little oil with the meal (a drizzle of olive oil on a salad, say) helps absorption. A supplement is for people who want a consistent measured blend on top of that, not a replacement for the vegetables.

The NeoLife option

NeoLife Carotenoid Complex is a whole-food, oil-based blend carrying four carotenoids — beta- and alpha-carotene, lycopene and lutein — extracted from five plants (carrot, paprika, tomato, spinach and marigold), with an added fruit blend and vitamin E. At 6 mg vitamin E per capsule (50% NRV) — 150% NRV at three capsules — it meets the threshold for the authorised claim that vitamin E contributes to the protection of cells from oxidative stress; the carotenoids carry no claim, and we do not imply one. It is 90 capsules, one to three a day (from about 75p a day). Two things to note: it contains soy and gelatine, so it is not suitable for vegetarians or anyone avoiding those; and it sits at the premium end at £67.50.

Products in this guide

Carotenoid Complex£67.50 Subscribe & save 10%View product