Antioxidants are substances, either natural or manufactured, that may prevent or limit cell damage caused by unstable particles called free radicals. Antioxidants work by neutralizing free radicals -- giving them electrons. Antioxidants may also be able to undo some cell damage.[1,2,4]
Types of antioxidants
Vitamin A, vitamin C, vitamin E, selenium, lycopene, and beta-carotene are examples of antioxidants.
Free radicals
Free radicals are groups of atoms that are produced when oxygen interacts with certain molecules, thereby setting off a chain reaction. Their primary danger comes from the damage caused when they react with DNA, and other cell components. Cells can die off, or stop functioning correctly, when this occurs. Antioxidants are the body's defense system against free radical damage.
Free radicals can be formed by:
- Sun exposure
- Cigarette smoke
- Alcohol consumption
- Air pollution
- Exercise
- Inflammation
- Drug abuse
Cells damaged by free radicals may be at risk for developing cancer, heart disease, and diabetes.[1]
Sources
Antioxidant Food Sources
The body makes some antioxidants and gets others from food to combat free radicals.[4] It's important to eat a well-balanced diet to help you get the antioxidants you need.
Good sources of antioxidants
| Category | Examples |
|---|---|
| Fruit | Strawberries, oranges, cantaloupe, watermelon |
| Vegetables | Broccoli, tomatoes, kale, carrots |
| Dairy | Milk, butter, eggs |
| Meat | Fish, chicken, beef, turkey |
| Legumes and oils | Nuts, seeds, oils, sunflower seeds, almonds, peanuts, corn oil |
| Carbohydrates | Bread and pasta |
| Cereals | Whole wheat, rice, corn |
Supplements can also be a good source of antioxidants.
Do antioxidants work
Antioxidants: Selenium
Many well-organized studies, involving numerous subjects, have looked at the effect of antioxidant supplements on diseases, such as cardiovascular disease, cancer, and cataract prevention.They found that overall, antioxidants are not beneficial.[2]
But, the Age-Related Eye Disease Study (AREDS), led by the National Eye Institute and co-sponsored by the National Institutes of Health, found that antioxidant supplementation could be beneficial. Researchers discovered that a combination of antioxidants (vitamin C, vitamin E, and beta-carotene) and zinc significantly reduced the risk of developing advanced-stage, age-related macular degeneration (ARMD) for people who had intermediate stage (ARMD) and advanced stage in only one eye.
However, the use of antioxidants without zinc was less effective and the antioxidants didn't effect cataract development.[2, 4]
More research is being done to discover antioxidants' effects on Alzheimer's disease, breast, and prostate cancers.[2]
Each antioxidant is different, so getting one or two types is not enough. They work together to provide better all-round health. That's why healthy eating, including a variety of fruits and vegetables, whole grains, and healthy fats from nuts, seeds, and oils, still beats supplements -- even in high doses -- in helping to prevent disease.[2]
Drug interactions
Antioxidants may interact with some medications, potentially altering their effects. Do not take vitamin E if you are on blood thinners as they may cause bleeding. Ask your doctor before taking antioxidants if you are undergoing cancer treatment.[2]
Safety issues and other considerations
References
FamilyDoctor.org; "Antioxidants: What You Need to Know;" 2010
National Center for Complementary and Alternative Medicine; "Antioxidants and Health: An Introduction;" Get the Facts; National Institutes of Health;" Updated 2012
National Cancer Institute; "Antioxidants and Cancer Prevention Fact Sheet"
Harvard School of Public Health; "Antioxidants: Beyond the Hype"
Rice; "Antioxidants and Free Radicals; Updated 1996
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Apr 04, 2025 
Blog Post
Longevity Vitamin Renaissance: 3 Major Studies Reinforce MitoPrime Ergothioneine's Role in Healthspan
Research shows Ergothioneine is a potential longevity vitamin with powerful antioxidant benefits. MitoPrime offers the highest quality form for aging well. -
Apr 04, 2025 
Product News
Nootropics Depot OptimALA was created.
Category: Alpha Lipoic Acid -
Apr 04, 2025 
Product News
Nootropics Depot Resveratrol was created.
Category: Resveratrol -
Apr 02, 2025 
Product News
Nootropics Depot Quercetin Phytosome QuerceFit was created.
Categories: Curcumin Phytosome, Quercetin -
Apr 01, 2025 
YouTube Video
Hobamine: Why This New Antioxidant Alternative Might Actually HELP Your Training Adaptations -
Mar 29, 2025 
Product News
Swanson Daily Antioxidant Boost was created.
Category: Antioxidants -
Mar 26, 2025 
Product News
The Vitamin Shoppe Resveratrol was created.
Category: Resveratrol -
Mar 26, 2025 
Blog Post
GHOST Basics: Simplified Essentials With High-Quality Ingredients
GHOST launches Basics line with 4 essential supplements. Creatine, Fish Oil, Vitamin C + Glutathione, and Digestive Enzymes deliver quality without complexity. -
Mar 25, 2025 
Product News
Designs For Health NRF2 Modulator was created.
Category: Antioxidants -
Mar 23, 2025 
Product News
Momentous Ubiquinol was created.
Category: Ubiquinol -
Mar 21, 2025 
Product News
SuperSmart R-Lipoic Acid was created.
Category: Alpha Lipoic Acid -
Mar 20, 2025 
YouTube Video
MegaNatural-BP: California's Wine Country Secret for Massive Pumps -
Mar 17, 2025 
Blog Post
MitoPrime & SalidroPure: The Perfect Pairing for Energy and Nootropics
MitoPrime and SalidroPure work at the cellular level to boost energy production, protect against oxidative stress and enhance cognitive function without crashes -
Mar 17, 2025 
Product News
Life-Flo Sea Buckthorn Oil, Pure was created.
Category: Sea Buckthorn -
Mar 16, 2025 
Product News
High Performance Nutrition S(9) was created.
Category: Trans Resveratrol -
Mar 16, 2025 
Product News
AllMax Nutrition EGT20+ was created.
Category: Antioxidants -
Mar 12, 2025 
Blog Post
MegaNatural-BP: PLT Health's Clinically-Validated Grape Seed Extract for Athletic Performance
MegaNatural-BP is a grape seed extract that enhances blood flow, supports healthy blood pressure and improves athletic endurance backed by clinical studies. -
Mar 11, 2025 
Blog Post
Hobamine: A Revolutionary Approach to Cellular Health with 2-HOBA
Hobamine solves the antioxidant paradox by targeting harmful reactive dicarbonyls, showing benefits for immune health and cellular protection.
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Antioxidant Price Alerts
The following price alerts are still active:
- Sep 26, 2026Swanson Asparagus Extract 60 Vcaps dropped by 9.5% to $7.29 at Walmart
- Sep 25, 2026NOW Ubiquinol CoQH-CF 60 Softgels dropped by 8.6% to $16.99 at AllStarHealth
- Sep 25, 2026Swanson Pycnogenol Wrinkle Cream 4 Oz. dropped by 26.4% to $24.87 at Amazon
- Sep 24, 2026Hi-Tech Pharmaceuticals Grape Seed 90 Tablets dropped by 11% to $15.99 at Tiger Fitness
- Sep 13, 2026Source Naturals Pycnogenol 60 Tablets (only 100mg) dropped by 51.1% to $33.84 at VitaCost.com
- Sep 10, 2026NutraBio CoQ10 60 Vcaps (only 100mg) dropped by 10% to $19.99 at NutraBio
- Sep 01, 2026Source Naturals Pycnogenol 60 Tablets (only 50mg) dropped by 12% to $26.36 at Amazon
- Aug 24, 2026ResVitale Resveratrol 30 Vcaps dropped by 15.9% to $37.83 at Amazon
- Aug 22, 2026Lindt 85% Dark Chocolate 12 Bars (only Dark) dropped by 6.3% to $64.99 at Amazon
- Aug 20, 2026NOW Pycnogenol 60 Vcaps (only 100mg) dropped by 12% to $43.99 at Muscle and Strength
- Aug 19, 2026NOW Pycnogenol 150 Vcaps dropped by 6.8% to $39.99 at AllStarHealth
- May 08, 2026SAN Na-R-ALA 60 Capsules dropped by 6.3% to $14.99 at Muscle and Strength
- Apr 27, 2026Healthy Origins CoQ10 150 Softgels (only 300mg) dropped by 6.2% to $43.99 at Amazon
- Apr 21, 2026Solaray Lycopene 60 Softgels dropped by 10% to $26.73 at Best Price Nutrition
- Aug 24, 2025Body First Astaxanthin 240 Vcaps dropped by 9.1% to $29.99 at AllStarHealth
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Antioxidant Reviews & Videos
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Sep 23, 2026TruShield Certified Headlines Two Sessions at The Outlook on Active Nutrition
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Aug 24, 2026Unmatched Supps Longevity Greens+: 14 Probiotic Strains and 2g Inulin
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Aug 04, 2026Apollon Nutrition Bare Knuckle V6: The Non-Stim Pre-Workout Breakdown
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Jun 30, 2026Senactiv: The Ingredient Behind Unmatched Stem Cell
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May 26, 2026Unmatched Supps Stem Cell: Recovery at a Cellular Level
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May 21, 2026Cellucor Longevity Creatine + NAD+: Full Breakdown
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May 06, 2026Bucked Up Flow Uses a New Nitric Oxide Pathway
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Mar 20, 2026Nick Walker Trusts Morphogen Nutrition for Health
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Feb 03, 2026Musclesport Synergy Multi Vitamin Powder with Fiber & Antioxidants
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Dec 24, 2025Nutristat Sodium R-Lipoic Acid Explained: Why Most ALA Supplements Don’t Absorb
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Dec 23, 2025@Nutristat
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Dec 03, 2025Is Merica Labz 1776 the Wildest Pre-Workout Ever Made?
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Oct 28, 2025UK vs US Supplements: Strom Sports & PLT Health | Episode #187
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Oct 25, 2025Nutristat Na-R-Lipoic Acid – 40x Better Absorption Than Standard ALA?
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Oct 24, 2025@Nutristat 💪🏻
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Oct 11, 2025Sensapure x Core Culture Pre-Workout Features PLT Health’s MegaNatural-BP® for Pumps and Performance
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Sep 27, 2025MegaNatural-BP Grape Seed Extract: California’s Sustainable Ingredient for Performance & Health
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May 22, 2025Why REJUVEN8 by GR8 Is Different
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May 09, 2025Organ Defender by 'Merica Labz: The All-In-One Supplement for Your Organs, Gut, and Beyond
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May 07, 2025OmniActive Health Technologies: From Seed to Supplement
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Apr 30, 2025Meet Cody Flynn of OmniActive Health Technologies
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Apr 30, 2025OmniActive's Botanical Innovations: From India to enXtra with Cody Flynn | Episode 165
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Apr 22, 2025GHOST GREENS ACAI BOWL -- Earth Day Limited Release! #GHOSTGreens #earthday #acaibowl #supplements
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Apr 18, 2025Setria Glutathione + PureWay-C Powers GHOST BASICS Antioxidant Formula #antioxidants #supplements
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Apr 16, 2025Reducing Malondialdehyde: Is Aldehyde Overload a Major Health Epidemic, and Can Cognizin Help?
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Apr 14, 2025MitoPrime Ergothioneine: The Longevity Vitamin Backed By 3 Major Scientific Studies #healthspan
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Apr 14, 2025Scientists call it the LONGEVITY VITAMIN! Three major studies now confirm MitoPrime...
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Apr 10, 2025Big Things Can Come in Little Sizes | NNB's MitoPrime + NutriScience's SalidroPure! #supplements
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Apr 01, 2025Hobamine: Why This New Antioxidant Alternative Might Actually HELP Your Training Adaptations
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Mar 20, 2025MegaNatural-BP: California's Wine Country Secret for Massive Pumps
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Mar 04, 2025MolTek's CreaSol SSAT: The Natural Tyrosol Compound That Enhances Creatine Performance
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Feb 26, 2025Black Ginger: The Energetic Force Behind EndoFlo's Performance Benefits
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Feb 17, 2025PLT Health's Slendacor Redefines Stim-Free Fat Loss
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Feb 13, 2025Shoden Revolutionizes Ashwagandha with 35% Glycowithanolide Standard
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Feb 12, 2025Titan Nutrition KRE-EX Unrivaled Brings Back Full-Spectrum Pre-Workout Era
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Feb 07, 2025Wellness Extracts Launches Eannatto 150+ with American River Nutrition's DeltaGold
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Feb 06, 2025SNS Launches Prototest XT with Aura Scientific Innovation
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Feb 03, 2025Modere's New Magnesium Blend for Optimal Performance
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Feb 01, 2025SNS Makes Aura Scientific's EndoFlo Available as Standalone EndoFlo XT
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Jan 30, 2025PLT Health's Supresa Saffron Extract Shows Promise in Appetite Management Study
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Jan 07, 2025Fisetin: Nature's Most Powerful Senolytic for Healthspan and Longevity
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Dec 12, 2024Magnum Nutraceuticals NEKTR: A Premium, Natural Greens Formula | Now in New Passionfruit Flavor!
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Dec 10, 2024Ghost Glow: Capsules vs. Powder – Which One Fits Your Routine?
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Nov 27, 2024Vanizem: Enhance Mood and Conquer Stress by Boosting Anandamide Production
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Nov 20, 2024Introducing Mindvalley States: Supplements to Support Your State of Mind
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Nov 06, 2024ProSupps Infinite Pre-Workout: High Focus, Moderate Caffeine, Maximum Performance
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Oct 17, 2024Musclesport Mass Revolution: A Complete Mass Gainer for Easy Bulking
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Sep 30, 2024ProSupps Jekyll: Your Perfect Intro to Pre-Workouts
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Sep 27, 2024The REAL Vitamin E, from Tocotrienols: DeltaGold by American River Nutrition
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Sep 24, 2024Bryan Johnson Posts Lab Tests for Blueprint Capsules… But They’re OUT OF SPEC!
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