Who Should Not Take AREDS/AREDS2 Supplements
Understanding AREDS Ingredients and Safety Concerns
The AREDS2 formula studied in research typically contains vitamin C 500 milligrams, vitamin E 400 international units, zinc 80 milligrams as zinc oxide (though some products use 25 milligrams), copper 2 milligrams as cupric oxide, lutein 10 milligrams, and zeaxanthin 2 milligrams. Some products may vary in exact doses or forms. The original AREDS formula used beta-carotene instead of lutein and zeaxanthin, but we now recommend the AREDS2 version for most patients.
AREDS supplements contain much higher amounts of vitamins and minerals than regular multivitamins or a healthy diet provides. These concentrated doses are designed to reach specific levels in the retina that research shows may benefit intermediate and advanced macular degeneration. However, taking more than your body needs can increase the risk of side effects or interactions, particularly digestive upset, copper deficiency from high zinc, and bleeding risk in select patients.
Our eye doctor will evaluate whether the potential benefits outweigh the risks in your individual situation. We consider your current eye condition, overall health, family history, and any other vitamins or medications you already take.
The original AREDS formula contained beta-carotene, a carotenoid that can be converted to vitamin A. Large studies found that beta-carotene increased the risk of lung cancer and death in people who smoke or previously smoked. Beta-carotene itself can cause harmless yellowing of the skin, but classic vitamin A toxicity is mainly a concern with preformed vitamin A supplements like retinol or retinyl esters, not typical beta-carotene dosing.
- Smokers who took beta-carotene showed increased lung cancer rates in large trials
- Former smokers also showed elevated risk, particularly those who quit recently
- Workers exposed to asbestos faced even greater danger, especially in trials that combined beta-carotene with preformed vitamin A
- Because AREDS2 provides similar benefit without this risk signal, beta-carotene is generally avoided, especially in current and former smokers
The AREDS2 study tested a formula that replaced beta-carotene with lutein and zeaxanthin, two nutrients naturally found in leafy green vegetables. This newer version showed similar effectiveness for reducing progression of macular degeneration without the lung cancer risk. Lutein and zeaxanthin are carotenoids that concentrate in the macula and act as natural filters for harmful blue light.
We now recommend the AREDS2 formula without beta-carotene for almost all patients. These ingredients have an excellent safety profile and do not carry the same warnings for smokers or anyone else.
Both AREDS formulas include high amounts of zinc oxide, typically 80 milligrams daily. This dose is much higher than the standard daily recommendation and can interfere with copper absorption. To prevent copper deficiency, the formula also includes 2 milligrams of cupric oxide.
- High-dose zinc in the original AREDS trial was associated with increased genitourinary adverse events and hospitalizations
- Too much zinc can interfere with copper absorption and lead to anemia or nerve problems
- Some people develop stomach upset or nausea from these mineral doses
- Patients with certain genetic conditions cannot safely process extra copper
- Kidney disease may change how your body handles these minerals
Smoking and Lung Cancer History: The Most Critical Risk
If you currently smoke any amount of tobacco, you should never take an AREDS formula that contains beta-carotene. Any current smoking increases concern about combining tobacco use with this supplement.
We will recommend only the AREDS2 formula with lutein and zeaxanthin if you smoke. You should also know that smoking itself dramatically speeds up macular degeneration, so quitting offers major benefits for both your eyes and your lungs.
The lung cancer risk from beta-carotene decreases over time after you quit smoking, but studies show the danger can persist for many years. Any history of smoking is a reason to prefer AREDS2 without beta-carotene. Your personal smoking history, including how many years you smoked and how much, helps us determine the safest formula.
We typically recommend the AREDS2 formula with lutein and zeaxanthin for all former smokers, regardless of how long ago you quit. This approach provides the intended eye health benefits while avoiding the risk signal seen with beta-carotene in people with any smoking history.
Anyone who has ever been diagnosed with lung cancer should avoid beta-carotene supplements, regardless of smoking status. The same applies if you have been treated for other lung diseases that increase cancer risk. Workers who were exposed to asbestos in construction, shipbuilding, or other industries should also avoid beta-carotene. The strongest harm signal in research came from trials using beta-carotene combined with preformed vitamin A in asbestos-exposed workers.
During your exam, we will ask about your work history and any past breathing problems. If you have scars in your lungs from asbestos or other occupational exposures, we may also coordinate with your primary care doctor or lung specialist before starting any AREDS supplement.
The AREDS2 formula without beta-carotene is the version we recommend for current and former smokers. This includes the same doses of vitamin C, vitamin E, zinc, and copper as the original, but substitutes 10 milligrams of lutein and 2 milligrams of zeaxanthin. Studies support similar benefit for your macula without increasing lung cancer risk.
Many brands now offer this updated formula, and we will help you identify products that match the research doses. Check the label to confirm the supplement contains no beta-carotene. Also avoid products with added preformed vitamin A in the form of retinol or retinyl palmitate unless specifically recommended for your situation.
Medical Conditions That May Rule Out AREDS Supplements
AREDS formulas contain high doses of vitamin E, which may increase bleeding risk, particularly in people with bleeding disorders or those taking anticoagulants or antiplatelets. If you have hemophilia, von Willebrand disease, or another bleeding disorder, this effect may lead to dangerous bleeding. Vitamin E also increases bruising and may cause bleeding in the digestive tract or other sites at very high doses.
- Unexplained bruising or frequent nosebleeds in your history
- Family members with diagnosed clotting disorders
- Heavy menstrual bleeding or bleeding after dental work
- Previous hemorrhagic strokes caused by bleeding rather than blockages
- History of gastrointestinal bleeding or ulcers
Discuss AREDS supplements with your surgeon and anesthesia team before any planned surgery. Many surgeons advise stopping high-dose vitamin E one to two weeks before some surgeries, especially if you are also on anticoagulants or antiplatelets. This includes eye surgery for cataracts or retinal issues, as well as procedures on other parts of your body. Excess bleeding during an operation can lead to serious complications and longer recovery.
If you recently had surgery, wait until your surgeon confirms you have healed well before restarting the vitamins. For minor procedures, confirm with your dentist or surgeon whether you need to stop, especially if you also take blood thinners. Always tell every doctor and dentist what supplements you take.
Some research has found an association between high-dose vitamin E supplementation at 400 international units daily, the dose in AREDS formulas, and increased prostate cancer risk. This signal has been seen in some studies but not others, and the relationship is not fully understood.
Men with a higher baseline risk of prostate cancer, including those with a family history or elevated PSA levels, should discuss the potential risks and benefits of AREDS supplements with both their eye doctor and their primary care doctor or urologist. We will help you weigh the vision benefits against other health considerations when deciding whether AREDS is appropriate for you.
Your liver processes and stores certain vitamins, and high doses may be a concern in liver disease. The AREDS2 formula typically does not contain preformed vitamin A, but products with beta-carotene or added retinol as well as high-dose vitamin E may pose greater risk for patients with hepatitis, cirrhosis, fatty liver disease, or elevated liver enzymes.
If you have significant liver disease, we may involve your primary care doctor or liver specialist when considering AREDS supplements. In some cases, we may recommend monitoring your macular degeneration more frequently without high-dose vitamins instead.
Kidney Disease, Genetic Conditions, and Mineral Disorders
The high vitamin C dose in AREDS formulas may increase the risk of calcium oxalate kidney stones in susceptible individuals. If you have a history of calcium oxalate stones, discuss AREDS supplements with your primary care doctor or urologist. If you have chronic kidney disease, your kidneys may also struggle to filter out excess vitamins and minerals. Zinc can accumulate to harmful levels when kidney function is reduced.
- Previous kidney stones, especially multiple episodes
- Chronic kidney disease or reduced filtration rate
- Family history of kidney stones before age 40
- Conditions like gout that affect mineral metabolism
- Regular dialysis treatments
Hemochromatosis causes your body to absorb and store too much iron from food. High doses of vitamin C in AREDS supplements increase iron absorption from your digestive tract, which can worsen iron overload. Excess iron deposits in your liver, heart, and pancreas, leading to organ damage and serious disease.
If you have been diagnosed with hemochromatosis or have a family history of this genetic condition, coordinate with your treating clinician before starting AREDS vitamins. In most cases, we will recommend against high-dose vitamin C supplements or work with your hematologist to determine the safest approach, recognizing that the AREDS evidence is tied to the full studied formulation.
Wilson's disease is a rare inherited disorder that causes copper to accumulate in the liver, brain, and eyes. The 2 milligrams of copper in AREDS formulas may be problematic for anyone with this condition and requires hepatology guidance. Symptoms include liver problems, tremors, difficulty speaking, and a special ring around the colored part of your eye that we can see during examination.
We test for Wilson's disease if we notice any suspicious signs or if you report a family member with the diagnosis. In most cases, we recommend avoiding copper-containing high-dose zinc formulations unless your treating liver specialist explicitly approves, while recognizing that copper is included in standard AREDS to prevent zinc-induced copper deficiency.
Medications and Other Supplements That Interact
If you take warfarin, apixaban, rivaroxaban, or other anticoagulants to prevent blood clots or strokes, adding vitamin E from AREDS can increase your bleeding risk. This combination may cause excessive bleeding. For warfarin in particular, vitamin E may increase bleeding risk and may affect INR stability, so coordinate with the clinician who prescribes your blood thinner before starting AREDS supplements.
- Medications for atrial fibrillation or previous clots
- Drugs prescribed after heart valve replacement
- Antiplatelet medicines like clopidogrel or aspirin at high doses
- Injectable blood thinners for recent surgery or hospitalization
Taking a regular multivitamin along with AREDS supplements often means you are getting double or triple the safe amount of certain nutrients. Vitamins A, C, and E are especially concerning because excess amounts can build up in your body over time. Zinc and copper from both sources may also add up to toxic levels.
We recommend stopping your daily multivitamin when you start AREDS, or choosing one that contains only minerals and B vitamins. Bring all your current supplements to your appointment so we can review the ingredient lists together and avoid dangerous overlaps.
Many people take extra zinc for immune support, vitamin C for colds, or vitamin E for heart health without realizing these overlap with AREDS ingredients. Combining these products can easily push you into the range where side effects occur. Too much zinc, for example, can cause copper deficiency anemia, while excessive vitamin E may increase the risk of bleeding.
Make a complete list of every pill, powder, and liquid supplement you use, including those you take only occasionally. We will calculate your total daily intake of each nutrient and adjust your regimen to stay within safe limits while still protecting your vision.
Certain prescription medications work differently when you take high doses of vitamins or minerals. Zinc can reduce absorption of some antibiotics and thyroid medicines, so you need to space these drugs several hours apart. High-dose antioxidants may be a concern with some chemotherapy or radiation treatments, so your oncology team should advise whether to pause supplements during cancer therapy.
- Antibiotics in the tetracycline or fluoroquinolone families
- Levothyroxine and other thyroid hormone replacements
- Immunosuppressive medicines after organ transplants
- Cancer treatments that may interact with high-dose antioxidants
When You Need Medical Clearance Before Starting AREDS
AREDS2 formulas have not been studied in pregnancy or breastfeeding, and we do not recommend them during these times. Products that contain beta-carotene or added preformed vitamin A such as retinol or retinyl esters carry additional concerns, as excessive vitamin A is linked to birth defects. High-dose supplementation in general may pose risks that have not been adequately studied.
If you are breastfeeding, vitamins pass into your milk and may deliver uncertain amounts to your infant. Macular degeneration does not typically progress rapidly, so we can usually pause supplements during this time and resume after you finish nursing. Your obstetrician and pediatrician should review any eye vitamins you are considering.
AREDS supplements are proven to help only people with intermediate macular degeneration in one or both eyes, or advanced macular degeneration in one eye. If you have early changes that do not yet threaten your vision, studies show these vitamins provide no benefit and expose you to unnecessary risks. They have not been shown to prevent onset of AMD or progression from early to intermediate stages.
- Small drusen with no pigment changes in your macula
- Normal vision and only routine age-related eye changes
- Family history of AMD but no signs in your own eyes
- Concern about prevention when you do not have active disease
Macular degeneration usually begins after age 60, and the AREDS studies included almost no participants under 55. We do not have good evidence about safety or effectiveness in younger adults. If you are under 50, we typically will not recommend these supplements even if a parent or sibling has AMD.
Eating a healthy diet rich in leafy greens, fish, and colorful vegetables provides natural lutein, zeaxanthin, and other nutrients that support eye health without the risks of high-dose pills. Not smoking, controlling blood pressure, and protecting your eyes from sunlight are more important prevention steps at younger ages.
Some AREDS2 products contain omega-3 fatty acids from fish oil, even though this ingredient was not part of the core formula tested in the main study and was not shown to reduce AMD progression. If you have a fish or shellfish allergy, choose a standard AREDS2 formula without omega-3 add-ons. Carefully read every label or ask your pharmacist about the source of all ingredients. Gelatin capsules may also be made from sources that trigger allergies.
Tell us about any previous allergic reactions to vitamins, minerals, food dyes, or preservatives. We can help you find a formulation that avoids your specific allergens if needed.
Monitoring for Problems and When to Stop Taking AREDS
After you start AREDS supplements, we typically schedule follow-up visits every six months to check your macular degeneration and watch for side effects. During these appointments, we examine your retina for changes, test your vision, and ask about any symptoms you have noticed. Lab tests may be considered if you have relevant conditions such as chronic kidney disease, liver disease, unexplained anemia or nerve problems, or if you take multiple high-dose supplements, but routine annual blood work is not standard for most patients on AREDS2.
More frequent monitoring may be necessary if you have other health conditions or take medications that interact with the vitamins. Contact our office promptly if you notice new vision symptoms such as distortion of straight lines, a new central dark or gray spot, sudden blurring, or any other change in your central vision, as these may signal AMD progression that requires urgent retina evaluation. Also let us know if you develop new medical problems or your primary care doctor changes your prescriptions between scheduled eye exams.
Many people experience mild digestive changes when they first start AREDS supplements, but these often get better after a few weeks as your body adjusts. The high zinc dose is a common cause of stomach problems including nausea, cramping, bloating, or constipation. Taking the vitamins with a full meal rather than on an empty stomach helps protect your stomach lining.
- Mild nausea or stomach upset, especially during the first few weeks
- Changes in bowel movements or constipation
- Metallic taste in your mouth after swallowing the pills
- Burping or indigestion that improves with food
- Cramping or bloating in some people
Taking the vitamins with food, splitting the dose between morning and evening, or switching to a different brand may reduce discomfort. If digestive problems continue beyond the first month or become severe, contact our office. We may suggest trying a different formulation or temporarily adjusting the approach.
If you take an AREDS formula that contains beta-carotene, you may notice your skin develops a slight yellow or orange color, especially on your palms and soles. This happens because the pigment accumulates in your tissue and is generally harmless. The color fades slowly after you stop taking the supplement.
However, yellowing of the whites of your eyes rather than just your skin can signal liver problems. We will check your eyes carefully during your follow-up visits to distinguish between harmless pigment deposits and signs of illness that require stopping the vitamins.
Certain symptoms while taking AREDS supplements should prompt you to call us for advice rather than waiting for your routine appointment. We will help you decide whether to continue, pause, or stop the vitamins based on what you are experiencing. Never ignore warning signs that could indicate a serious reaction or health complication.
- Stomach pain that is severe or keeps you from eating
- Unusual bruising, bleeding gums, or blood in urine or stool
- Yellowing of eyes or skin along with dark urine
- New or worsening fatigue and weakness
- Rash, hives, swelling, or trouble breathing
Although rare, life-threatening reactions can occur with any medication or supplement. Go to the emergency room or call 911 if you develop sudden severe symptoms after taking AREDS vitamins. Do not wait to contact our office first if you have trouble breathing, chest pain, severe bleeding, or signs of stroke.
Bring the supplement bottle with you so emergency doctors know exactly what ingredients and doses you have been taking. Inform the hospital staff about all your other medications and health conditions as well, since this information helps them provide the safest treatment.
Frequently Asked Questions
Most people who quit smoking a decade ago can safely take the AREDS2 formula with lutein and zeaxanthin, which does not contain beta-carotene. We still prefer this version over the original formula even for long-term former smokers because it carries no lung cancer risk and provides similar benefit. Your eye doctor will consider how many years you smoked and how much when making the final recommendation.
AREDS2 supplements do not treat wet or neovascular AMD, and they do not replace anti-VEGF injections or other treatments your retina specialist prescribes. They are intended to reduce the risk of progression to advanced disease in the fellow eye or further progression if you have intermediate AMD. Continue your regular follow-up visits and any injections or other therapies exactly as directed, even while taking AREDS2 vitamins.
Generally, we advise against combining AREDS supplements with a standard daily multivitamin because the doses will add up to potentially toxic levels. If you feel you need additional nutrients not in the AREDS formula, choose a supplement that contains only B vitamins, vitamin D, calcium, or magnesium. Always review the complete ingredient list with us to avoid dangerous overlaps.
Many over-the-counter eye vitamins claim to support vision but contain very different ingredients and doses than the formulas tested in the AREDS and AREDS2 studies. Only products that match the specific research amounts have proven benefit for macular degeneration. We will recommend products that meet the studied formula and reputable manufacturing standards.
We review your complete medical history, including smoking status, chronic diseases, current medications, and recent blood work results if available, before recommending any AREDS supplement. During your examination, we also assess the stage of your macular degeneration to confirm the vitamins are appropriate. This personalized evaluation ensures you receive a formula that helps your eyes without harming your overall health.
Missing a few doses occasionally will not cause harm, but the vitamins work best when taken consistently every day. If you forget, simply resume your normal schedule rather than doubling up. Taking more than the recommended amount does not provide extra benefit and increases your risk of side effects. If you accidentally take a double dose, skip the next one and return to your regular routine.
Getting Help for Who Should Not Take AREDS/AREDS2 Supplements
Deciding whether AREDS supplements are right for you requires careful consideration of your eye health, medical history, and current medications. We will work with you to choose the safest formula or determine if vitamins are not appropriate in your situation. Schedule a comprehensive eye examination so we can evaluate your macular degeneration and discuss the best plan to protect your vision.