Ingredient type

Antioxidants

Compounds that neutralize free radicals in lab studies, from vitamins to plant pigments like astaxanthin and resveratrol. Benefits in people are often smaller than lab results suggest.

Glutathione

Evidence: Preliminary

Glutathione is the body's main cellular antioxidant. Oral supplements can raise body stores at 250 to 1,000 mg a day, and a small pilot study in fatty...

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Maqui berry

Evidence: Preliminary

Maqui berry is a dark purple Chilean fruit rich in anthocyanins. Small human trials suggest effects on oxidative stress markers and after-meal blood s...

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