AREDS 2 Explained: Formula, Ingredients, and Alternatives

If you’ve been told you have macular degeneration — or you’re staring at a shelf of eye vitamins trying to decode the label — “AREDS 2” is the term that matters. It’s not a brand. It’s a specific formula, tested in a major NIH trial, and it’s the only eye supplement with strong evidence behind it. This guide explains exactly what’s in it, how it differs from the original AREDS, who actually needs it, and which products genuinely match the formula.

Last Updated: June 1, 2026

Medical Disclaimer: This article is for informational purposes only and is not medical advice. AMD staging requires a dilated eye exam. Talk to your ophthalmologist or optometrist before starting any eye supplement, especially one with high-dose zinc.

The 30-second answer

• AREDS 2 is a formula, not a brand. Six ingredients: vitamin C 500 mg, vitamin E 400 IU, lutein 10 mg, zeaxanthin 2 mg, zinc 80 mg, copper 2 mg. No beta-carotene.
• AREDS vs AREDS 2: the original (2001) used 15 mg beta-carotene; AREDS 2 (2013) swapped it for lutein + zeaxanthin because beta-carotene raised lung cancer risk in smokers.
• No AREDS 3 exists. AREDS 2 is still the current formula. “AREDS 3” products are marketing.
• Who it’s for: intermediate AMD in one or both eyes, or advanced AMD in one eye — diagnosed by an eye doctor. Not for healthy eyes.
• What it does: cuts 5-year risk of progressing to advanced AMD by ~25%. It does not improve vision or prevent AMD.
• Best match: PreserVision AREDS 2. Ocuvite is lower-dose and is not the full formula.

Now the detail.

What “AREDS 2” actually means

AREDS stands for the Age-Related Eye Disease Study — a series of large clinical trials funded by the National Eye Institute (part of the NIH). The goal was simple: find out whether a specific combination of vitamins and minerals could slow age-related macular degeneration (AMD), the leading cause of central vision loss in older adults.

There were two main studies:

• AREDS (AREDS 1), published 2001 — established that a specific antioxidant-plus-zinc formula reduced progression to advanced AMD by about 25% in higher-risk patients.
• AREDS 2, published 2013 — refined that formula to make it safer and tested whether additions like omega-3 helped.

So when a product says “AREDS 2,” it’s claiming to match the formula validated in that 2013 trial. The phrase is meaningful only if the doses actually match.

The exact AREDS 2 formula and ingredients

Here is the complete formula, ingredient by ingredient:

Two things people consistently get wrong:

There is no beta-carotene. That was the whole point of AREDS 2 (more on this below).

There is no omega-3. The AREDS 2 researchers specifically tested adding DHA and EPA (fish oil) to the formula. It produced no additional benefit for AMD, so omega-3 was left out of the final formula. Omega-3 is still worth taking for cardiovascular health — just not as an AMD treatment.

If a bottle lists a “proprietary blend” instead of these exact amounts, you can’t verify it matches the trial — which means you can’t know if it works. Insist on a label that shows the individual doses.

AREDS vs AREDS 2: the beta-carotene story

This is the single most important distinction, and it has real safety consequences.

The original AREDS formula used 15 mg of beta-carotene. It worked — but separate large trials (CARET, ATBC) had already found that beta-carotene supplements increased lung cancer risk in current and former smokers. That made the original AREDS formula a poor choice for anyone with a smoking history.

AREDS 2 removed beta-carotene entirely and replaced it with lutein 10 mg + zeaxanthin 2 mg — two carotenoids that the body actually concentrates in the macula. The result: the lutein/zeaxanthin version worked at least as well as the original, with none of the smoking-related cancer risk.

The practical rule that follows:

If you have ever smoked, never take the original beta-carotene AREDS formula. Use AREDS 2 (lutein/zeaxanthin) only. Check the label — if it lists beta-carotene, put it back.

AREDS 2 also tested lowering zinc from 80 mg to 25 mg. The lower-zinc version performed about the same, which is why some products now offer a 25 mg-zinc AREDS 2 option for people who find 80 mg hard on the stomach.

Is there an AREDS 3?

No. AREDS 2 (2013) is still the most recent validated formula. There has not been an “AREDS 3” trial.

You may see products advertised as “AREDS 3,” “next-generation,” or “beyond AREDS 2,” often adding meso-zeaxanthin, saffron, or higher carotenoid doses. Some of these ingredients have interesting preliminary research — but none has the large, randomized, outcome-based evidence that AREDS and AREDS 2 have. Until a major trial proves a better formula, “AREDS 3” is a marketing label, not a clinical standard.

Who should actually take AREDS 2

The AREDS 2 formula was studied — and showed benefit — in a specific group:

Take it if (and your eye doctor agrees):

• You have intermediate AMD in one or both eyes, OR
• You have advanced AMD in one eye (and want to protect the other)

It was NOT shown to help — so it’s generally not recommended — if:

• Your eyes are healthy with no AMD
• You have only early AMD (small drusen)
• You’re hoping to prevent AMD (it slows existing disease; it doesn’t prevent new disease)
• You want to “improve” or sharpen your vision (no supplement does this)

The catch: you cannot stage your own AMD. Staging depends on the size and number of drusen and pigment changes that an eye doctor sees during a dilated exam. So the gate is always the same — get examined first, and let the diagnosis drive the decision. For the bigger picture on what supplements can and can’t do for eyes, see do eye vitamins actually work and our deep dive on supplements for macular degeneration.

Dosage, how to take it, and side effects

Dosage: most AREDS 2 products are two softgels per day (typically one with breakfast, one with dinner) to deliver the full formula — though some are dosed once daily, so follow the specific label. Take with food to absorb the fat-soluble carotenoids and vitamin E and to cut down on stomach upset.

Side effects and cautions:

• Zinc 80 mg can cause nausea or stomach upset — food helps. Long-term high-dose zinc depletes copper, which is why 2 mg of copper is built in.
• Vitamin E 400 IU can add to bleeding risk if you take blood thinners (warfarin, Eliquis) or are heading into surgery — tell your doctor.
• Zinc reduces absorption of some antibiotics (tetracyclines, fluoroquinolones) — separate doses by 2+ hours.
• If you take a daily multivitamin, check that you’re not double-dosing zinc by stacking it with AREDS 2.

For more on combining supplements safely, see what supplements should you not take together and supplement and medication interactions.

Choosing a product (and reading the label)

When you compare “AREDS 2” products, the only question that matters is: do the doses match the formula?

• PreserVision AREDS 2 (Bausch + Lomb) is the reference standard — it matches the trial formula exactly and is the most ophthalmologist-recommended brand.
• Store-brand / generic AREDS 2 (Kirkland, Walgreens, CVS) are often much cheaper and, if the label lists the exact six-ingredient formula, are pharmacologically equivalent. Generic isn’t worse here — the molecule is the molecule.
• Ocuvite is a lighter daily eye vitamin and is not the full AREDS 2 formula. Fine for general support; not a substitute if you have intermediate or advanced AMD.
• MacuHealth, EyePromise and similar add or rebalance carotenoids. Reasonable products, but treat their “better than AREDS 2” claims with healthy skepticism.

Bring the bottle’s Supplement Facts panel to your pharmacist if you’re not sure — comparing it to the six-ingredient formula takes 30 seconds.

The bottom line

AREDS 2 is the rare eye supplement with genuine, trial-backed evidence — but only in a narrow lane. It’s a six-ingredient formula (vitamin C, vitamin E, lutein, zeaxanthin, zinc, copper, no beta-carotene) that slows progression to advanced AMD by about 25% in people who already have intermediate or advanced macular degeneration. It doesn’t prevent AMD, doesn’t improve vision, and isn’t meant for healthy eyes.

Get a dilated eye exam, let your eye doctor stage your AMD, and if they recommend AREDS 2, choose a product that matches the formula exactly. For everyone else, the fundamentals — not smoking, UV-blocking sunglasses, leafy greens, and regular eye exams — protect your vision more reliably than any pill. For seasonal eye care, see our guide to eye vitamins for summer UV protection.