Antioxidant Supplements

What Are Antioxidants?

Antioxidants are compounds that can prevent and/or slow oxidation and subsequent damage to cells caused by free radicals. Free radicals are highly reactive and unstable molecules that the body produces as a natural by-product of metabolism. Free radicals can be generated as a result of exposure to toxins in the environment, including X-rays, ozone, cigarette smoke, air pollutants, industrial chemicals, or other harmful substances in the environment. Read more >

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  1. Ester-C 1,000mg - 60 Tabs

    1000MG OPTIMUM POTENCY ESTER C Sisu's potent ester C with bioflavanoids is used by the body more effectively than regular ascorbic acid vitamin C. This optimum potency is suitable for therapeutic uses that require larger quantities. Vitamin C also helps to reduce histamine release in the body, thereby alleviating allergy symptoms. There are numerous forms of vitamin C with ascorbic acid being ...

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    Sale: $21.45

    Reg.: $24.99 (Save $3.54)

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  2. Ester-C 250mg Chewable (Orange) - 120 Tabs

    SISU ESTER C CHEWABLE ORANGE FLAVOUR Did you know that regular vitamin C chews can erode tooth enamel? It's true; the acid from the C leeches minerals from the teeth when chewed. NON-acidic ester C chewables ensure that minerals stay in the teeth where they belong. [CHEWABLE TABLET]

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    Sale: $20.95

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  3. Ester-C 250mg Chewable (Wildberry) - 120 Tabs

    SISU ESTER C 250MG KIDS CHEWABLE (WILDBERRY) TABLETS Ester-C 250 from Sisu is specially formulated for kids 4 and up! Ester-C is a unique, patented, non-acidic form of vitamin C and the only vitamin C that has been clinically proven in published, human trials to be absorbed into the white blood cells of the immune system and to remain there up to 24 hours! Taking Ester-C Vitamin C daily is a g...

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  4. Ester-C 500mg Chewable (Citrus Punch) - 90 Tabs

    SISU ESTER C CHEWABLE CITRUS FLAVOUR Did you know that regular vitamin C chews can erode tooth enamel? It's true; the acid from the C leeches minerals from the teeth when chewed. NON-acidic ester C chewables ensure that minerals stay in the teeth where they belong. [CHEWABLE TABLET]

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    Sale: $22.95

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  5. Vitamin D 1,000iu - 200 Tabs

    VITAMIN D 1000 IU TABLETS FROM SISU VITAMIN D 1000IU from Sisu. Natural Source vitamin D (cholcalceferol) is available in an easy to swallow tablet form. Containing optimum 1000 IU potency, Vitamin D is necessary for absorption of calcium and is an important factor in the maintaining of bones and teeth. One Sisu Vitamin D tablet provides 1,000 IU of Vitamin D, the maximum allowed in a Canadian...

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  6. Vitamin D 1,000iu - 400 Tabs

    VITAMIN D 1000 IU TABLETS FROM SISU VITAMIN D 1000IU from Sisu. Natural Source vitamin D (cholcalceferol) is available in an easy to swallow tablet form. Containing optimum 1000 IU potency, Vitamin D is necessary for absorption of calcium and is an important factor in the maintaining of bones and teeth. One Sisu Vitamin D tablet provides 1,000 IU of Vitamin D, the maximum allowed in a Canadian...

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  7. Ester-C 1,000mg - 210 Tabs - Sisu

    NEW FORMULA! 1000MG OPTIMUM POTENCY ESTER C Sisu's potent ester C with bioflavanoids is used by the body more effectively than regular ascorbic acid vitamin C. This optimum potency is suitable for therapeutic uses that require larger quantities. Vitamin C also helps to reduce histamine release in the body, thereby alleviating allergy symptoms. There are numerous forms of vitamin C with ascorbi...

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    Sale: $58.95

    Reg.: $68.99 (Save $10.04)

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Antioxidant Supplements

What Are Antioxidants & Why Do We Need Them?

Antioxidants are compounds that can prevent and/or slow oxidation and subsequent damage to cells caused by free radicals. Free radicals are highly reactive and unstable molecules that the body produces as a natural by-product of metabolism. Free radicals can be generated as a result of exposure to toxins in the environment, including X-rays, ozone, cigarette smoke, air pollutants, industrial chemicals, or other harmful substances in the environment. While you can get antioxidants through the food you eat, you can also take supplements.

While free radicals have a short lifespan, during that time, they can damage human cells including DNA, causing various mutations that can accelerate the aging process and increase your risk of health conditions like heart disease and cancer. This is why an antioxidant-rich diet and supplements are essential to neutralize unstable, reactive oxygen species and reduce their chances of causing damage. Antioxidants are found in certain foods, including vegetables, fruits, omega-3-rich fish, and green tea. Nutrient antioxidants include vitamins A, C and E, copper, zinc, and selenium minerals, as well as a wide range of phytonutrients. Some of the most potent and well-researched antioxidants include: beta carotene, carotenoids, curcumin, astaxanthin, glutathione, N-acetyl cysteine, alpha lipoic acid, resveratrol, and many others. Eye antioxidants are also a favourite for many as a way to take care of your eye health

Benefits Of Antioxidant Supplements

  • Enhances Cellular Energy Production
  • Helps Guard Against Cell Damage/Oxidative Stress
  • Helps Prevent Premature Skin Aging
  • Protects Cellular DNA 

Who Needs Antioxidant Supplements?

A quality antioxidant supplement may be recommended to improve energy production and resistance to oxidative stress, and to slow the aging process and protect the body against the onset of age-related degenerative diseases, including: atherosclerosis, cardiovascular disease, arthritis, age-related macular degeneration, hypertension, cardiovascular disease, and neurodegenerative conditions. An antioxidant supplement may also be recommended to protect skin health against UV radiation by slowing down the visible signs of skin aging and improving scar tissue and skin healing.

Antioxidant Potencies & Formats

Antioxidant supplements are available in various formats, including tablets, capsules, powders, and liquids. Many are also offered in novel delivery forms, such as enteric coatings, liposomal liquids, and sublingual lozenges. The potency and recommended daily dose will vary according to the individual antioxidant. Always refer to the label instructions for dosing recommendations.  

Final Thoughts on Buying Quality Supplements

There is a wide variety of antioxidant supplements on the market, each offering distinct health benefits and enhancing the body's antioxidant protection. The best antioxidant supplement for you can be determined by speaking to the knowledgeable staff and your favourite health food store. You can buy most antioxidants here at National Nutrition.ca both in-store and online. 

An antioxidant supplement is generally recommended to be taken right before or after a meal to reduce the chance of stomach upset. Antioxidants may be either water or fat-soluble. If you’re taking a fat-soluble antioxidant, it should be taken with a fat-containing meal or snack to optimize absorption. 

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