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Antioxidants

Antioxidants are substances that neutralize reactive oxygen compounds which can damage cells. Some are made by the body, others such as vitamins C and E come from food.

Immune SupportHair & SkinEssential HealthLongevityCardiovascular

What it is studied for

The strongest rated effects first. Bars show the size of the effect, the letter grades the evidence, and each rating lists the studies behind it.

Immune SupportModerateA3 studies
InflammationModerateA3 studies
Skin textureHair & SkinModerateBNo linked study
Essential HealthModerateBNo linked study
Anti-aging SkinHair & SkinModerateBNo linked study
Oxidative stressLongevityModerateBNo linked study
All 8 rated effectsGrouped by health goal, with the publications behind each rating

What are antioxidants?

Antioxidants participate in the body’s defenses against oxidative stress, which can damage cells. They include substances made by the body and compounds obtained from food. Different antioxidants are not interchangeable. 1

Key studies

The most recent publications linked to Antioxidants's ratings.

Antioxidant and anti-inflammatory effects of curcumin/turmeric supplementation in adults: A GRADE-assessed systematic review and dose-response meta-analysis of randomized controlled trials.2023Effects of antioxidant supplement on immune health and physical wellbeing: A randomized, controlled trial2022The role of oxidative stress, antioxidants and vascular inflammation in cardiovascular disease (a review).2015The influence of antioxidant supplementation on markers of inflammation and the relationship to oxidative stress after exercise.2007Anti‐oxidants as modulators of immune function2000
All 6 studiesEvery publication linked to Antioxidants

Why people take it

Immune Support19.6%
Essential Health19.6%
Gut Health13.7%
Detox9.8%
Inflammation7.8%
Energy5.9%

SuppCo community snapshot, 2026-09-28. Reasons for use are not evidence that it works.

Questions people ask

Are all antioxidants equivalent?

No. They have different properties and cannot be treated as interchangeable. 1

Does ORAC predict benefit?

No. It is a laboratory measurement, not a demonstrated human health effect. 2

Should everyone take an eye-health blend?

AREDS 2 is intended for particular stages of macular degeneration, not universal prevention. 3

Sources