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What are antioxidants?

Antioxidants protect cells against oxidation, which causes cells to age prematurely. Antioxidants protect cells against premature death or aging. While oxygen is essential for life, it also causes damage to living cells.

Antioxidants are for living cells as what sun tan does for the skin to protect against too much UV-A and UV-B exposure. Antioxidants like thiols (alpha lipoic acid) or ascorbic acid (vitamin C) help neutralize the damaging effects of oxidation.

Many anti-oxidants are abundant in regular food sources, while others need to be made out of these same food sources by the body itself.
Examples are glutathione, enzymes (superoxide dismutase) or vitamins as vitamin A, vitamin C and vitamin E.

NOW Berberine Glucose Support 90 softgels  extract from the bark of  Berberis aristata , also known as Indian berberris or tree curcumin backed by solid scientific evidence  is well absorbed by target tissues supports healthy lipid levels for cholesterol and triglycerides...
Our brandsNOW Foods best beforeNov 2027
3600 4800 -25%
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One capsule of NOW ® Green Tea Extract with 200 mg EGCg possesses the phytonutrient content equal to about 2-3 cups of green tea. Green tea’s bioactive compounds include polyphenols and catechins, which are known to exhibit potent free radical neutralizing properties. Its most abundant...
Our brandsNOW Foods best beforeSep 2027
1500 2000 -25%
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NOW Lycopene 10mg features LYC-O-MATO®, a patented tomato complex with a full complement of tomato phytonutrients, including natural lycopene. Natural lycopene is known for its powerful free radical scavenging properties. Clinical studies indicate that Lycopene helps to support...
Our brandsNOW Foods best beforeSep 2026
3975 5300 -25%
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NOW Melatonin capsules  contains melatonin, the hormone that is secreted by the pineal gland that aids biorhythm regulation. Biorhythm is disturbed by stress, crossing time zones and changing work shifts or even just the transition into and out of daylight saving time. Melatonin production also...
NOW Melatonin (3mg/5mg /10mg)
3mg 60 caps 10mg 100 caps 5mg 60 caps 3mg 180 caps
Our brandsNOW Foods best beforeDec 2028
825 1100 -25%
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NOW Liquid Melatonin for a healthy sleep cycle free radical scavenger 3 mg per serving fast absorption, great taste Melatonin is a potent free radical scavenger naturally produced in the pineal gland and present in high amounts in the gastrointestinal tract. It is involved...
Our brandsNOW Foods best beforeAug 2028
1050 1400 -25%
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NOW PABA 500mg 100 capsules  PABA (Para-Aminobenzoic Acid) is found in food such as grains, eggs, milk and meat. It is a precursor of folic acid and may be used by our gut microbiota to produce folic acid. PABA, or para-aminobenzoic acid, is a compound that’s garnered interest as a...
Our brandsNOW Foods best beforeJuly 2027
2175 2900 -25%
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NOW CoQ10 30mg 240 capsules: co-enzym Q10  is a vitamin-like compound that plays a central role in cellular energy production. CoQ10 is found throughout the body, but is especially concentrated in the heart, liver, and kidney and production has been found to decline with age. CoQ10 works as...
Our brandsNOW Foods best beforeMay 2027
3600 4800 -25%
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NOW Quercetin with Bromelain 120 capsules  Quercetin is a naturally occurring free radical scavenger that supports healthy seasonal immune system function. Laboratory studies have demonstrated that quercetin can also help to promote normal respiratory function. Bromelain has a long history...
Our brandsNOW Foods best beforeJan 2029
3600 4800 -25%
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