When you search for AREDS 2, you’ll often see it linked to supplements for eye health. In reality, AREDS 2 is not a product. It is the name of a landmark clinical trial conducted by the US National Eye Institute. The trial built on an earlier study (AREDS) and tested whether specific vitamins and minerals could slow the progression of age-related macular degeneration (AMD).
Over time, the phrase “AREDS 2” has become shorthand for the nutrient formulation tested in that trial. Today, when people in the UK talk about “AREDS 2 supplements,” they mean products that follow that specific formula: vitamin C, vitamin E, zinc, copper, lutein, and zeaxanthin.
This guide explains the difference between the original AREDS and AREDS 2 studies, why the AREDS 2 formula is now widely recommended, and what UK readers need to know about NHS guidance, availability, and regulations.
What were the AREDS and AREDS 2 studies?
The original AREDS (1992 to 2001)
The Age-Related Eye Disease Study (AREDS) began enrolling participants in November 1992 and completed enrolment by January 1998. It followed thousands of patients with varying stages of AMD over several years, with major findings published in October 2001. The study showed that a specific combination of high-dose antioxidants and zinc reduced the risk of progression to advanced AMD in high-risk patients.
The follow-up: AREDS 2 (2006 to 2012, results 2013)
The AREDS 2 trial launched in September 2006 and ran for five years, with completion in October 2012. Results were published in May 2013 in JAMA (Journal of the American Medical Association). The study tested modifications to the original AREDS formula, including:
- Replacing beta-carotene (linked to higher lung cancer risk in smokers) with lutein and zeaxanthin
- Testing whether reducing zinc levels changed the protective effect
The AREDS 2 formula was found to be at least as effective as the original and safer, particularly for smokers and former smokers. Reducing zinc did not materially change outcomes. The formula is as follows: Vitamin C 500 mg, Vitamin E 400 IU, Zinc 25 mg or 80 mg, Copper 2 mg, Lutein 10 mg, Zeaxanthin 2 mg.
From clinical trials to supplements
Because of the strength of the evidence, supplement manufacturers worldwide began producing products that matched the AREDS 2 formula. This is why, outside of the scientific community, the name “AREDS 2” has shifted from describing the clinical trial itself to describing the nutrient formulation it established.
Does the NHS Recommend AREDS 2?
Current NHS and NICE guidance
The NHS does not prescribe AREDS 2 supplements as part of standard AMD treatment. Many local NHS formularies advise against prescribing antioxidant supplements for AMD (self-care purchase is usual). However, it does acknowledge that supplements containing lutein, zeaxanthin, zinc, and vitamins C and E may benefit people with intermediate or late AMD. The guidance is clear that these supplements do not cure AMD, but they can help slow its progression in some patients.
What your optometrist might tell you
In the UK, many optometrists and ophthalmologists recommend AREDS 2-based supplements for patients at risk of worsening AMD. Your optometrist can help you decide whether you are in the group likely to benefit from them. This advice is usually tailored to your eye health, lifestyle factors such as smoking, and any medications you are taking.
Where Can You Get AREDS 2 in the UK?
NHS vs private purchase
Unlike in the US, where AREDS 2 is often linked to specific brands, the NHS does not cover or prescribe these supplements. In the UK, AREDS 2 is available only as a private purchase.
Trusted sources for buying supplements
You can find AREDS 2 formulations from UK pharmacies, opticians, and online health retailers. Not every “eye health” supplement on the market matches the official AREDS 2 formulation, so check the label carefully to ensure it contains lutein, zeaxanthin, zinc, copper, vitamin C, and vitamin E in the correct proportions.
UK regulations vs US oversight
In the US, dietary supplements fall under FDA oversight, but in the UK, they are regulated as food supplements under UK food law. Reputable UK brands will comply with safety requirements and labelling laws. Since “AREDS2” is the name of a medical trial, putting it on a food-supplement label can look like a disease treatment claim—which isn’t allowed in the UK. That’s why brands usually leave the term off and instead list the AREDS 2 ingredients and amounts. An example of this would be Vision Defender AMD.
Who Should Take AREDS 2?
Recommended for those with AMD
AREDS 2 is recommended for people with intermediate or late AMD in one or both eyes. Evidence shows it can slow the progression of vision loss in these groups.
Who should avoid AREDS 2?
People who are pregnant, breastfeeding, or who have certain health conditions should consult their GP before starting any supplement. Importantly, smokers and former smokers should avoid beta-carotene formulations and stick to AREDS 2 (without beta-carotene).
Can healthy individuals take AREDS 2 preventively?
There is no evidence that AREDS 2 prevents AMD from developing in people who do not already have signs of the condition. If you have healthy eyes, you are better off focusing on a nutrient-rich diet, not smoking, and getting regular eye tests.
How to Take AREDS 2 Supplements
Typical AREDS 2 dosage explained
Use a product that delivers the AREDS 2 daily amounts (Vitamin C 500 mg, Vitamin E 400 IU, Zinc 25 mg or 80 mg, Copper 2 mg, Lutein 10 mg, Zeaxanthin 2 mg); brands may provide this in one or two capsules or tablets. It’s usually taken with meals for better absorption. Always follow the label instructions.
How long does it take to work?
AREDS 2 is not a quick fix. Studies show benefits build gradually over several years of consistent use. It is about long-term support rather than short-term results.
Can AREDS 2 cause side effects?
Most people tolerate AREDS 2 well, but mild side effects such as stomach upset, headaches, or dizziness can occur, often linked to the zinc content. 25 mg zinc is just as effective as 80 mg, and less likely to cause side effects. Taking supplements with food usually helps. If side effects persist, stop and consult your GP or optometrist.
Frequently Asked Questions About AREDS 2 in the UK
Can AREDS 2 cause stomach upsets and headaches?
Stomach upsets and headaches are not a common side effect of AREDS 2, but some people do experience them. This is usually linked to the zinc content, as high doses can sometimes upset the stomach or trigger mild discomfort. Taking AREDS 2 on an empty stomach may also increase the chance of a stomach upset. If you notice side effects after starting the supplement, try taking it with food and plenty of water. If they persist, it is a good idea to stop and check in with your GP or optometrist, who can advise whether an alternative formulation might suit you better.
Can AREDS 2 cause dizziness?
Dizziness is a less common side effect but can occur in some individuals. In most cases, it is linked to the zinc content or to taking supplements alongside other medications. If you experience dizziness, it is important to make sure you are taking AREDS 2 with food and not exceeding the recommended dose. Persistent dizziness should not be ignored. If this happens, stop taking the supplement and consult your GP or pharmacist. They can review whether the formulation is appropriate for you and suggest suitable alternatives available in the UK.
Does AREDS 2 cure macular degeneration?
AREDS 2 cannot cure age-related macular degeneration (AMD). No supplement or treatment currently reverses damage caused by AMD or restores lost vision. What AREDS 2 can do, based on large clinical trials, is slow the progression of intermediate to advanced AMD in certain people. This means it may help maintain vision for longer and reduce the risk of severe sight loss. In the UK, the NHS does not prescribe AREDS 2, but many optometrists recommend it as part of a wider strategy to support eye health. Regular check-ups, a balanced diet, and lifestyle choices such as not smoking remain essential.
Which is better: AREDS 2 or lutein supplements alone?
AREDS 2 contains a carefully studied combination of six nutrients: lutein, zeaxanthin, vitamin C, vitamin E, zinc, and copper. While lutein by itself can support general eye health, studies show that the full AREDS 2 formulation provides the strongest evidence for slowing AMD progression. This is because the nutrients work together to provide protective benefits to the retina. In the UK, you will find many “eye health” supplements, but not all match the AREDS 2 formulation. If your optometrist has advised you to consider AREDS 2, it is best to choose a supplement that contains the full clinically tested formula rather than lutein alone.
Can you take AREDS 2 with other vitamins or statins?
Most people can safely take AREDS 2 alongside other common vitamins and medications, including statins. However, it is important to be mindful of possible nutrient overlaps. For example, if you already take a multivitamin with zinc or vitamin E, adding AREDS 2 may mean you are consuming higher-than-necessary amounts. In most cases this is safe, but it is worth double-checking. The NHS and UK pharmacists generally recommend reviewing your supplement routine to avoid duplication. If you are on prescription medication, especially for heart health or blood pressure, always check with your GP or pharmacist before starting AREDS 2 to ensure there are no potential interactions.
How much AREDS 2 should I take per day?
The standard AREDS 2 daily dosage, based on clinical trials, is Vitamin C 500 mg, Vitamin E 400 IU, Zinc 25 mg or 80 mg, Copper 2 mg, Lutein 10 mg, Zeaxanthin 2 mg. The dose may be split to two capsules/tablets per day, usually one in the morning and one in the evening, taken with food. This split dosage helps the body absorb the nutrients more effectively while reducing the risk of stomach upset. In the UK, different brands may package their supplements slightly differently. Some provide two smaller capsules/tablets, others one larger capsule/tablet with the same combined dosage. Always follow the instructions on the label of the product you choose. Consistency is important. Missing doses occasionally is not harmful, but regular daily use is needed for long-term benefit.
Where can I buy AREDS 2 in the UK?
Unlike in the US, where AREDS 2 products are often linked to major pharmaceutical brands, in the UK they are available as over-the-counter supplements rather than NHS prescriptions. You can buy AREDS 2 from high-street pharmacies, opticians, or trusted online retailers. Not every supplement marketed for eye health matches the AREDS 2 formula, so it is worth checking labels carefully to ensure you are getting the clinically studied combination. UK-based brands such as Vision Defender provide AREDS 2 formulations that meet local quality standards and can be ordered online. Since prices vary, many people prefer online options for cost-effectiveness and convenience.
AREDS 2 vs AREDS 1: Why It Matters in the UK
Why was beta-carotene removed?
AREDS 1 contained beta-carotene, which increased the risk of lung cancer in smokers and former smokers. For this reason, AREDS 2 eliminated beta-carotene and introduced lutein and zeaxanthin instead.
The role of lutein and zeaxanthin
Lutein and zeaxanthin are carotenoids that naturally occur in the retina. They act like internal sunglasses, filtering harmful blue light and protecting against oxidative stress. Their inclusion in AREDS 2 made the formula both safer and more effective.
Lifestyle and Eye Health Beyond AREDS 2
Diet and nutrition for AMD
A diet rich in leafy greens, oily fish, colourful fruits, and nuts can support eye health and complement the effects of AREDS 2.
Smoking, exercise, and eye health
Smoking remains the biggest lifestyle risk factor for AMD. Quitting smoking, staying active, and managing cardiovascular health can significantly reduce progression risks.
The importance of regular eye checks
Supplements are only part of the picture. Regular eye exams allow optometrists to monitor changes in your vision and adjust recommendations as needed.
Key Takeaways for UK Readers
- AREDS 2 is evidence-based: It can slow AMD progression but does not cure the condition
- The NHS does not prescribe it, but many UK optometrists recommend it
- Supplements must be purchased privately in the UK, from pharmacies, opticians, or trusted online brands
- Choose carefully: Not all eye health supplements match the AREDS 2 formulation
- Lifestyle still matters: A healthy diet, not smoking, and regular eye checks are crucial
Conclusion
For people in the UK concerned about age-related macular degeneration, understanding AREDS 2 can feel overwhelming given how much information comes from US-based sources. The key is that AREDS 2 is available here, but it is not part of NHS prescriptions. If you have AMD, your optometrist may recommend it as part of your eye care routine. When choosing a supplement, look for a trusted UK brand that follows the clinically proven formula, such as Vision Defender. Most importantly, remember that AREDS 2 is just one part of maintaining eye health. Lifestyle, diet, and regular check-ups are just as vital