Eye vitamins, explained
What Is AREDS2, and What Does It Mean for Your Eye Vitamins?
AREDS2 is the eye vitamin formula from a large National Eye Institute study: lutein 10 mg, zeaxanthin 2 mg, vitamin C, vitamin E, zinc and copper. It helped people who already had intermediate or late AMD. It does not prevent AMD in people without it. Zeaxan is not an AREDS2 formula, because its label prints no single amounts.
Written by the Zeaxan editorial teamUpdated · 8 min read

The basics
What is AREDS2?
AREDS2 is the second Age-Related Eye Disease Study run by the National Eye Institute, and the name of the vitamin formula it settled on. When an eye doctor says "AREDS2", they mean six nutrients at six set doses (NEI, AREDS2).
The first study, AREDS, found its formula lowered the risk of advanced AMD by about 25% over five years. That result came from people who already had intermediate or late AMD (NEI, AREDS2). AMD, or age-related macular degeneration, damages the sharp central vision you use to read and drive (MedlinePlus, 2024).
So AREDS2 is not a brand. It is a recipe with a narrow, tested purpose.
The recipe
What is in the AREDS2 formula?
The AREDS2 formula has six parts: lutein 10 mg, zeaxanthin 2 mg, vitamin C 500 mg, vitamin E 400 IU, zinc 80 mg and copper 2 mg (NEI, AREDS2). A product that prints those amounts on its label matches the studied recipe.
| Nutrient | AREDS2 daily amount | Zeaxan label (2 capsules) |
|---|---|---|
| Lutein | 10 mg | Not published (5th of 11 in a 600 mg blend) |
| Zeaxanthin | 2 mg | Not published (10th of 11) |
| Vitamin C | 500 mg | None listed |
| Vitamin E | 400 IU | None listed |
| Zinc | 80 mg | None listed |
| Copper | 2 mg | None listed |
Four of the six AREDS2 nutrients are missing from Zeaxan, and the other two have no printed amount. See the full Zeaxan label.
Who it helps
Who should take the AREDS2 formula?
AREDS2 is for adults an eye doctor has diagnosed with intermediate AMD, or late AMD in one eye. That is the group in which the formula lowered the risk of advanced AMD (NEI, AREDS2) (AAO, 2021).
A 2023 Cochrane review of 26 studies agreed. Antioxidant vitamins plus zinc probably slow progression to late AMD in people who already have it. Lutein and zeaxanthin on their own showed little effect (Cochrane, 2023).
Only a dilated eye exam can tell you whether you have AMD, and at what stage. Ask your eye doctor which stage you have before you buy anything labeled for the macula.
A common mix-up
Does AREDS2 stop macular degeneration from starting?
No. NEI states that nutritional supplements cannot prevent AMD, and that the AREDS formulas showed no benefit for people with early AMD or no AMD (NEI, 2020).
A separate Cochrane review found no evidence that vitamin E, beta-carotene or vitamin C keep AMD away in the general population (Cochrane, 2017). The American Academy of Ophthalmology says the same (AAO, 2021). What does lower your risk is not smoking: smokers are about twice as likely to get AMD (AAO, 2021).
- Diagnosed intermediate or late AMD: ask about AREDS2.
- Early AMD: AREDS showed no benefit; keep your exams.
- No AMD: no eye vitamin has been shown to keep it away.

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See today's priceWhy the recipe changed
Why did AREDS2 drop beta-carotene?
Beta-carotene was linked to lung cancer in smokers. In AREDS2, lung cancers showed up in 2% of people taking beta-carotene versus 0.9% without it, so the AREDS2 formula uses lutein and zeaxanthin instead (NEI, beta-carotene).
The older AREDS formula with beta-carotene is not advised for current or former smokers (NEI, beta-carotene).
Dose check
Is Zeaxan an AREDS2 formula?
No. The bars set the AREDS2 amounts beside the only thing the Zeaxan label tells you.
Zeaxan lists lutein and zeaxanthin inside a 600 mg blend led by Himalayan pink salt. U.S. rules only require a blend's total weight, not each amount (21 CFR 101.36). Our best-case arithmetic puts lutein at no more than about 6 mg and zeaxanthin at no more than about 3 mg, and the real numbers are likely lower.
The bottle's own claims, such as "Supports Eye Health", are the seller's words. No trial has tested this blend. Read more in lutein and zeaxanthin in Zeaxan.

At the store
How can you tell if a product really follows AREDS2?
Read the Supplement Facts, not the front of the box. A true AREDS2 product prints all six nutrients with amounts that match the study (NEI, AREDS2).
Find six numbers
Lutein, zeaxanthin, vitamin C, vitamin E, zinc and copper, each with its own amount.
Check for beta-carotene
If you smoke or used to, avoid the older formula that contains it (NEI, beta-carotene).
Skip vague blends
A "proprietary blend" with one total cannot show you match the study. Our post on proprietary blends explains why.
Watch for big promises
In 2005 the FTC acted against an eye supplement seller over claims to restore vision lost to AMD (FTC, 2005).
For a full checklist, see how to choose an eye supplement.
FAQ
AREDS2 questions people search for
What does AREDS2 stand for?
AREDS2 stands for the second Age-Related Eye Disease Study, run by the National Eye Institute. The name now also means the vitamin formula from that study: lutein 10 mg, zeaxanthin 2 mg, vitamin C 500 mg, vitamin E 400 IU, zinc 80 mg and copper 2 mg (NEI, AREDS2).
Should I take AREDS2 if I do not have macular degeneration?
No study supports it. NEI says the AREDS formulas showed no benefit for people without AMD or with early AMD, and that supplements cannot prevent AMD (NEI, 2020). Not smoking and regular eye exams are the steps with real evidence behind them (AAO, 2021) (AAO, 2021).
Does Zeaxan contain the AREDS2 doses?
Nobody can say, because the label prints no single amounts. Zeaxan has no vitamin C, vitamin E, zinc or copper, and its lutein and zeaxanthin sit inside a 600 mg blend (21 CFR 101.36). Our best-case math puts lutein at no more than about 6 mg, under the AREDS2 10 mg.
How much did AREDS lower the risk of advanced AMD?
About 25% over five years, in people who already had intermediate or late AMD (NEI, AREDS2). That figure comes from the original AREDS formula in that group only. It does not apply to people with early AMD or healthy eyes, where no benefit was found (NEI, 2020).
Is AREDS2 safe for smokers?
The AREDS2 formula has no beta-carotene, which is why it is the version for smokers and former smokers. In AREDS2, lung cancers occurred in 2% of people taking beta-carotene versus 0.9% without it (NEI, beta-carotene). Ask your eye doctor which version fits you.
Do lutein and zeaxanthin work without the other AREDS2 nutrients?
The evidence is weak. A 2023 Cochrane review found lutein and zeaxanthin alone versus placebo showed little effect, with low-certainty evidence, while antioxidant vitamins plus zinc probably slow late AMD in people who already have AMD (Cochrane, 2023).
Can an eye vitamin replace my AMD checkups?
No. A vitamin cannot show you whether AMD is changing, and AMD is painless, so you may not notice early loss (MedlinePlus, 2024). Keep the exam schedule your eye doctor sets, and get same-day care for sudden flashes, many new floaters or a curtain over your vision (AAO, retina).
Who wrote this
Written and reviewed by
Plain-language pages built from the bottle label and linked medical sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by an authorized U.S. retailer, not by the manufacturer. We are paid a commission when you buy through our order links.
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