Taking This Daily Supplement Can Give You Whole-Body Protection

16 Best Vitamin C Supplements to Boost Your Immune System


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You probably know vitamin C as an important nutrient for the body. I know when I think of vitamin C, I think of using it to ward off colds and illness and stay healthy. That's true and then some. "Vitamin C functions as a powerful antioxidant in the body, protecting molecules from damage by free radicals, and is a crucial part of numerous functions in the body, including the synthesis of collagen," explains Jennifer Martin-Biggers, PhD, MS, RDN, VP of scientific affairs and education at Hum Nutrition.

And Jeffrey Bland, PhD, a clinical biochemist, the president of Big Bold Health, and the founder of the Institute for Functional Medicine, adds that vitamin C is also known to protect against cellular injury and is important for immune health.

16 Best Vitamin C Supplements to Boost Your Immune System


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As for how much vitamin C you should be getting, Martin-Biggers says that research has shown that doses of vitamin C higher than 200mg at a time are not more efficacious as only so much can be used at a time. "The Recommended Dietary Allowance for vitamin C for adults is 90mg for men and 75mg per day for women," she explains. "A clinical study showed that 100mg of vitamin C per day resulted in a significant increase in antioxidant activity and other studies show that higher doses of 180mg or 200mg per day have additional antioxidant free radical protection."

16 Best Vitamin C Supplements to Boost Your Immune System


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In general, you can get enough vitamin C if you eat a diet high in fresh fruits and vegetables. Some good sources of vitamin C include citrus, bell peppers, strawberries, and cruciferous vegetables. "Unfortunately, the majority of the population does not consume the suggested servings of fruits and vegetables daily and therefore is often not getting optimal amounts of vitamin C for immune health," Bland says.

So if you're not getting enough of the vitamin, you might have to take a supplement. Before taking any new supplement, it's best to consult with your doctor, dietitian, or another healthcare professional who can give you personalized dosage guidelines and other recommendations. "I recommend regular intake of vitamin C for immunity and skin benefits," Martin-Biggers says. "Regular use of vitamin C supplements has been shown to slightly shorten the duration of the common cold, but will not reduce the risk of catching a cold in the first place. Vitamin C stimulates fibroblasts that generate collagen and also provides additional skin benefits due to its antioxidant functions which help protect from oxidative stress."

16 Best Vitamin C Supplements to Boost Your Immune System


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When shopping for a supplement, the main form of vitamin C that is used in dietary supplements is ascorbic acid (and it's also the form found in food), Martin-Biggers says. They can come in a variety of different forms, like capsules, chewable tablets, gummies, powders, liquids, and spray. What you choose depends on what your doctor recommends and also what type you prefer. For example, if you have trouble with pills, you can try a gummy or a liquid supplement.

Take a look at some of the best vitamin C supplements below.

1. Now Vitamin C-1000

Now's vitamin C supplements are designed to provide a sustained release of the nutrient. The formula also contains rose hips for even more vitamin C content.

2. Hum Nutrition Boost Sweet Boost

"Vitamin C is usually included in supplements with other vitamins or ingredients that provide a specific benefit and are formulated at a dose that is best for that benefit—for example, Boost Sweet Boost from Hum Nutrition provides 120mg of vitamin C along with zinc and elderberry fruit extract for immune support," Martin-Biggers says.

3. Thorne Research Vitamin C With Flavonoids

This supplement contains natural citrus flavonoids and is free of gluten, eggs, tree nuts, yeast, soy, fish, or shellfish.

4. Solgar Vitamin C 1000 Mg

Solgar's capsules can also support the immune system during and after exercise.

5. Emergenc-C 1000mg Vitamin C Powder

Mix this powder into a glass of water to strengthen your immune system. In addition to vitamin C it contains zinc, manganese, and electrolytes, plus B vitamins for energy support.

6. The Nue Co. Immunity

You can take one capsule of The Nue Co.'s Immunity in the morning for a boost. It contains Quercetin Dihydrate and Bioperine to help the body absorb the vitamin C in the formula.

7. MaryRuth's Megadose Vitamin C Liposomal

If you're looking for a liquid version of vitamin C, try this one from MaryRuth's. The liquid, liposomal form enhances absorption.

8. Airborne 1000mg Vitamin C Chewable Tablets

Airborne's chewable vitamin C tablets also contain 73% of your daily value of zinc. And if you don't know, zinc is also an integral nutrient for immune function.

9. Nature Made Vitamin C 500 mg

These supplements contain no color added, artificial flavors, added preservatives, or gluten.

10. Garden of Life Vitamin Code Raw Vitamin C

Garden of Life's vegan capsules also include a blend of live probiotics (L. bulgaricus and L. plantarum) and enzymes (lipase, protease, and bromelain).

11. Sports Research Vitamin C 1000mg

Sports Research's vitamin C features a high-potency version of it and is formulated with plant-based ingredients.

12. Nature's Way Vitamin C 1000 mg with Bioflavonoids

These vitamin C supplements contain bioflavonoids—they're formulated to support immune function and strengthen collagen.

13. LivOn Laboratories Lypo-Spheric Vitamin C

This supplement uses liposomal encapsulation technology so your body can better absorb vitamin C and take advantage of its benefits. One packet contains 1000 mg of the nutrient—just add it to water.

14. Pure Encapsulations Essential-C & Flavonoids

In addition to vitamin C, this supplement contains bioflavonoids, quercetin, and rutin, which provide even more antioxidant support.

15. Sundown Vitamin C Gummies

For a gummy version of vitamin C, these ones from Sundown feature vitamin C, rosehips, and bioflavonoids. The gummies do not contain gelatin, corn syrup, harsh fillers, preservatives, artificial flavors, gluten, and dairy.

16. Garden of Life MyKind Organics Vitamin C Organic Spray

This liquid spray also contains amla berry, which is one of the richest sources of vitamin C. It's available in two different flavors: orange-tangerine and cherry-tangerine.