AREDS2 formula
Content by: OpenSupplement Editorial Team | Medical review: pending | Last updated: April 13, 2026
TL;DR
Exact combination proven in largest eye health supplement trial ever conducted
AREDS2 study showed 25% reduction in advanced AMD progression over 5 years
Contains vitamin C, E, lutein, zeaxanthin, zinc, and copper in precise ratios
Well-tolerated with excellent safety profile from 5-year clinical trial
Monthly cost: $20-30 for authentic AREDS2 formulation
Best for: intermediate AMD, large drusen, family history of macular degeneration
What it is
The AREDS2 formula represents evidence-based medicine at its finest — a specific combination of nutrients proven effective in the largest supplement trial in ophthalmology history. The formula contains vitamin C (500mg), vitamin E (400 IU), lutein (10mg), zeaxanthin (2mg), zinc oxide (80mg), and cupric oxide (2mg) in the exact doses that reduced AMD progression by 25%.
This isn't a "kitchen sink" approach to supplementation, but a scientifically optimized formula based on understanding of retinal biochemistry. Each component targets specific aspects of AMD pathophysiology: antioxidant vitamins combat oxidative stress, carotenoids provide macular pigment protection, zinc supports retinal enzyme function, and copper prevents zinc-induced deficiency. The ratios were refined through two major clinical trials spanning over a decade.
The AREDS2 formula replaced beta-carotene from the original AREDS with lutein and zeaxanthin, eliminating lung cancer risk in smokers while maintaining (and possibly improving) efficacy for eye protection.
What the research says
The AREDS2 Trial: Gold Standard Evidence
The Age-Related Eye Disease Study 2 [1] enrolled 4,203 people aged 50-85 with intermediate AMD and followed them for 5 years. Results were definitive: the AREDS2 formula reduced risk of progression to advanced AMD by 25% and reduced risk of moderate vision loss by 19%. This wasn't a marginal benefit — it represented hundreds of people maintaining functional vision who would have otherwise progressed to legal blindness.
Who Benefits Most
Secondary analyses [2] revealed the formula works best for people with intermediate AMD (medium to large drusen) and those with low dietary antioxidant intake. Participants eating less than one serving of fish per week saw greater benefits from omega-3 addition, while those already eating fish regularly saw no additional benefit.
Original AREDS Foundation
The AREDS2 success built on the original AREDS trial [4], which first demonstrated that high-dose antioxidants and zinc could slow AMD progression by 25%. AREDS2 refined this formula, removing potentially harmful beta-carotene and adding macular-specific carotenoids.
Clinical Recommendation Standard
Every major ophthalmology organization — American Academy of Ophthalmology, American Optometric Association — recommends AREDS2 formula for intermediate AMD. It's not alternative medicine; it's mainstream clinical practice based on Level 1 evidence.
Practical Application: If you have intermediate AMD diagnosed by an eye care professional, AREDS2 formula should be part of your treatment plan alongside regular monitoring. The evidence is too strong to ignore. [3]
DISCLAIMER: The information on this page is for educational purposes only and has not been evaluated by the Food and Drug Administration. This content is not intended to diagnose, treat, cure, or prevent any disease. Consult a qualified healthcare professional before using any dietary supplement, especially if you are pregnant, nursing, taking medication, or have a medical condition.
This page may contain affiliate links. If you purchase through these links, we may earn a small commission at no extra cost to you. Learn more.
AREDS2 formula on Amazon
Safety
The AREDS2 formula has an excellent safety profile established through 5 years of clinical trial data on over 4,000 participants. Side effects were minimal and primarily related to the high zinc content: mild gastrointestinal upset in about 8% of users, typically resolved by taking with food.
Component-specific considerations: High-dose vitamin E (400 IU) may increase bleeding risk in people on blood thinners. Zinc can cause nausea on empty stomach and may interact with certain antibiotics. However, the overall risk-benefit profile strongly favors supplementation in appropriate candidates.
Interactions
Blood-thinning medications: • Warfarin, heparin — vitamin E may enhance anticoagulant effects (moderate — monitor INR) • Aspirin, clopidogrel — minimal interaction but inform your physician
Antibiotics: • Tetracyclines, quinolones — zinc reduces absorption (significant — separate by 2+ hours)
Other supplements: • Iron supplements — zinc may reduce iron absorption (minor — take at different times) • Calcium — may reduce zinc absorption (minor)
Dosing
AREDS2 Formula (take daily):
- Vitamin C: 500mg
- Vitamin E: 400 IU (as mixed tocopherols preferred)
- Lutein: 10mg
- Zeaxanthin: 2mg
- Zinc oxide: 80mg (equivalent to 25mg elemental zinc)
- Cupric oxide: 2mg
Timing: Take with largest meal to minimize GI upset from zinc. Can take as single dose or split morning/evening. Food requirement: Essential for zinc tolerance and fat-soluble vitamin absorption.
Brand considerations: Look for supplements specifically labeled "AREDS2 formula" with exact ingredient amounts. PreserVision AREDS2 is the brand used in the trial, but generic equivalents work if doses match exactly.
Cost
Authentic AREDS2 formulas cost $20-30 monthly. PreserVision AREDS2 (the brand used in the study) typically costs $25-30, while generic versions run $18-25. This represents excellent value considering the strength of evidence and potential to preserve vision worth thousands of dollars in quality of life.
Avoid cheap knockoffs that don't contain exact AREDS2 doses — the specific amounts and ratios matter. Some products claim "AREDS2 support" but use lower doses or different forms. Investment perspective: $300 annually to potentially prevent vision loss that could eliminate driving, reading, and independence is exceptional value.
The bottom line
If you have intermediate AMD or large drusen, AREDS2 formula isn't optional — it's evidence-based medicine. The 25% reduction in progression risk is clinically meaningful and could preserve functional vision for years. The safety profile is excellent, costs are reasonable, and every major eye care organization recommends it. Don't wait for symptoms to worsen; AMD progression is often irreversible. Take the exact AREDS2 doses with food, get regular eye exams, and view this as vision insurance backed by bulletproof science.
References
- Age-Related Eye Disease Study 2 Research Group. Lutein + zeaxanthin and omega-3 fatty acids for age-related macular degeneration: the Age-Related Eye Disease Study 2 (AREDS2) randomized clinical trial. JAMA. 2013;309(19):2005-15.
- Chew EY, Clemons TE, SanGiovanni JP, et al. Secondary analyses of the effects of lutein/zeaxanthin on age-related macular degeneration progression: AREDS2 report No. 3. JAMA Ophthalmol. 2014;132(2):142-9.
- Chew EY, Clemons T, SanGiovanni JP, et al. The Age-Related Eye Disease Study 2 (AREDS2): study design and baseline characteristics (AREDS2 report number 1). Ophthalmology. 2012;119(11):2282-9.
- Age-Related Eye Disease Study Research Group. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E, beta carotene, and zinc for age-related macular degeneration and vision loss: AREDS report no. 8. Arch Ophthalmol. 2001;119(10):1417-36.
Sources for this page include published meta-analyses, systematic reviews, and NIH dietary supplement fact sheets. All claims reflect the evidence as of early 2026.
This is not medical advice. Consult your healthcare provider before starting any supplement, especially if you take medications.