AREDS 2 vs AREDS 3: Key Differences Explained (2026)
Written by Dr. Louis Michaelos, Ophthalmologist & Founder, MacuRest | Last reviewed June 2026
TL;DR: AREDS 3 is now both an ongoing clinical trial AND a commercial product. PreserVision launched its AREDS3 Formula Soft Gels in February 2026, adding a B-vitamin complex to the proven AREDS2 nutrients. Whether to switch from AREDS2 to AREDS3 depends on your disease stage and risk factors — the AREDS2 formula remains the gold standard recommended by the AAO, and AREDS3 has not yet published independent trial results proving superiority.
What Changed in 2026: PreserVision AREDS3 Is Now a Real Product
Until early 2026, "AREDS 3" referred only to an ongoing National Eye Institute clinical trial — there was no commercially available "AREDS 3" supplement backed by a completed study. That changed in February 2026 when Bausch + Lomb launched PreserVision® AREDS3 Formula Soft Gels, adding a unique 8 B-vitamin complex to the established AREDS2 nutrient foundation.
This means patients are now being presented with a real choice between AREDS2 and AREDS3 products at the pharmacy — and making that choice requires understanding what actually changed, and what the evidence does (and doesn't) support.
What is AREDS 2?
AREDS 2 stands for the Age-Related Eye Disease Study 2 — a major clinical trial sponsored by the National Eye Institute that ran from 2006 to 2012, enrolling over 4,000 participants. The study established that a specific combination of nutrients reduced the risk of AMD progression to advanced stages by approximately 25% over five years.
The AREDS 2 formula: Vitamin C 500mg, Vitamin E 400 IU, Lutein 10mg, Zeaxanthin 2mg, Zinc 80mg, Copper 2mg. This is the formula the American Academy of Ophthalmology currently recommends for patients with intermediate or advanced AMD.
What is PreserVision AREDS3? What's Actually Different?
PreserVision AREDS3 (launched February 2026) contains all six AREDS2 nutrients plus an exclusive 8 B-vitamin complex — including B1 (thiamine), B2 (riboflavin), B3 (niacinamide), B5 (pantothenic acid), B6 (pyridoxine), B7 (biotin), B9 (folic acid), and B12 (cyanocobalamin).
PreserVision's three key claims for AREDS3:
- Protects — same AREDS2 nutrients that neutralize free radicals and replenish the eye's natural filter
- Nourishes — B-vitamin complex supports healthy cellular eye function
- Boosts — formulated to provide 2× better absorption of lutein and zeaxanthin compared to the original PreserVision AREDS2 Soft Gel (based on AUC measurements)
The absorption improvement claim is notable: PreserVision reformulated the softgel delivery using olive oil, linseed oil, and sunflower lecithin as the base for the carotenoids — a meaningful change in bioavailability compared to their older formulation. This is not a marketing claim about AREDS3 as a category; it's specifically about their new softgel formulation.
What is the AREDS 3 Clinical Trial?
Separately from PreserVision's product, the AREDS 3 clinical trial is an ongoing National Eye Institute study investigating whether additional nutrients — particularly omega-3 fatty acids (DHA and EPA) and modified zinc dosages — can further improve outcomes beyond AREDS2. This trial has not published final results. PreserVision's AREDS3 product is inspired by emerging research but is not the result of a completed AREDS3 clinical trial in the way AREDS2 was.
This is an important distinction: the "AREDS3" label on PreserVision's product does not mean the formula has been validated in a large randomized controlled trial the way AREDS2 was. It reflects Bausch + Lomb's proprietary formulation decisions and internal research.
Should You Switch From AREDS2 to AREDS3?
This depends on your situation:
If you are currently stable on an AREDS2 supplement: There is no urgent clinical reason to switch. The AREDS2 formula is the AAO-recommended standard. The B-vitamins in AREDS3 have supporting research but have not been proven in a large AMD-specific RCT to reduce progression risk beyond AREDS2.
If you have a B-vitamin deficiency or are at early-stage risk: PreserVision AREDS3 is positioned for a broader AMD patient population, including those at earlier stages. Discuss with your ophthalmologist.
If you experience GI issues with standard AREDS2: Both PreserVision AREDS2 and AREDS3 use 80mg zinc. MacuRest uses 25mg zinc for daily tolerability — a meaningful difference for patients who experience nausea or GI discomfort at the 80mg dose.
If you want melatonin support: Neither PreserVision AREDS2 nor AREDS3 contains melatonin. MacuRest is the only AREDS2-inspired formula that combines the core macular nutrients with 5mg melatonin to support the eye's overnight repair cycle.
Full Comparison: AREDS2 vs PreserVision AREDS3 vs MacuRest
| Feature | PreserVision AREDS2 | PreserVision AREDS3 | MacuRest |
|---|---|---|---|
| Lutein | 10mg | 10mg | 10mg |
| Zeaxanthin | 2mg | 2mg | 2mg |
| Vitamin C | 500mg | 500mg | 500mg |
| Vitamin E | 400 IU | 400 IU | 400 IU |
| Zinc | 80mg | 80mg | 25mg (tolerability) |
| Copper | 2mg | 2mg | 2mg |
| B-vitamin complex | None | 8 B-vitamins | Yes (B-complex) |
| Melatonin | None | None | 5mg |
| Improved absorption formulation | Standard | 2× vs original PV AREDS2 | Evening timing + fat-soluble optimization |
| Safe for smokers | Yes | Yes | Yes |
| Dosing | 2 softgels/day | 2 softgels/day | 2 capsules/evening |
| Overnight repair support | No | No | Yes — melatonin |
| Ophthalmologist-formulated | No (pharma co.) | No (pharma co.) | Yes — Dr. Michaelos |
| Completed RCT basis | AREDS2 trial (NEI) | AREDS2 trial + internal research | AREDS2 trial + melatonin research |
The MacuRest Difference
MacuRest was formulated before PreserVision AREDS3 launched — and arrived at some of the same conclusions independently. Both formulas add B-vitamins to the AREDS2 base. But MacuRest goes further by addressing what neither PreserVision AREDS2 nor AREDS3 has ever included: melatonin for overnight retinal repair support.
The retinal pigment epithelium performs its most critical maintenance work while you sleep. AMD patients have consistently lower melatonin levels than age-matched controls. A 2024 study in JAMA Ophthalmology found melatonin users had significantly lower AMD progression rates across 100,000+ patients. MacuRest is designed for evening use so the AREDS2 nutrients and melatonin work together during this critical overnight window — something no version of PreserVision addresses.
Additionally, MacuRest uses 25mg zinc vs the 80mg in both PreserVision formulas. The 80mg dose causes GI side effects in a meaningful percentage of patients — a primary reason people stop taking their supplement. Consistency over years is what produces lasting macular protection. A supplement you tolerate well every evening is more protective than one you stop taking.
See the MacuRest formula → | Best time to take AREDS2 | PreserVision vs MacuRest full comparison
Frequently Asked Questions
Is AREDS 3 better than AREDS 2?
The AREDS3 clinical trial has not published final results proving superiority over AREDS2. PreserVision's AREDS3 product adds a B-vitamin complex and claims 2× better lutein/zeaxanthin absorption compared to their original AREDS2 softgel — but this is an internal comparison, not a head-to-head clinical trial against AREDS2. The AAO continues to recommend the AREDS2 formula. AREDS3 products are not inferior — they simply don't yet have the same completed evidence base.
What did PreserVision AREDS3 change from AREDS2?
PreserVision AREDS3 (launched February 2026) adds an 8 B-vitamin complex (B1, B2, B3, B5, B6, B7, B9, B12) to the proven AREDS2 formula. It also reformulated the softgel base for improved lutein and zeaxanthin absorption. The six core AREDS2 nutrients and their doses remain unchanged.
Should AMD patients take AREDS2 or AREDS3?
For patients with intermediate or advanced AMD, the AAO-recommended standard remains AREDS2. PreserVision AREDS3 may be appropriate for patients who want B-vitamin support or who are at earlier stages of AMD risk. Always follow your ophthalmologist's recommendation for your specific disease stage.
Does MacuRest use AREDS2 or AREDS3?
MacuRest is built on an AREDS2-inspired formula with B-complex vitamins and 5mg melatonin — formulated for evening use to support the eye's overnight repair cycle. It does not use unverified "AREDS3" marketing; its ingredients are grounded in completed clinical research and emerging melatonin science.
What is the difference between AREDS2 and AREDS3 zinc doses?
Both PreserVision AREDS2 and AREDS3 use 80mg zinc. MacuRest uses 25mg zinc, chosen by Dr. Michaelos for daily tolerability. GI side effects from 80mg zinc are among the most common reasons patients discontinue supplementation.
Is AREDS3 safe for smokers?
Yes. PreserVision AREDS3 is beta-carotene free, making it safe for current and former smokers — identical to AREDS2 in this regard.
This article is for informational purposes only and does not constitute medical advice. Patients with AMD should work with a licensed ophthalmologist to determine the right supplement protocol for their specific stage of disease and health history. Last updated June 2026 to reflect the February 2026 launch of PreserVision AREDS3 Formula Soft Gels.