12 Best Vitamin C Supplements (2022) to Fight Against the Flu Virus: Reviews and Prices
As of September 2021, there are more than 20 studies that have been launched to investigate the benefits of vitamin C against COVID-19. You can review the status of these trials on clinicaltrials.gov.
The supplements on this list were chosen based on quality, manufacturing standards, usability, and price.
Here are the best vitamin C supplements of 2021.
1– 4. Best capsulesCapsules are the most popular form of vitamin C supplements. These are among the best on the market.
- Non-GMO Vitamin C Supplements with Citrus Bioflavonoids & Rose Hips for Immune Support & Antioxidant Protection
2. Smarter Raw Whole Food Vitamin C
- Vitamin C 1000mg with Elderberry, Citrus Bioflavonoids & Rose Hips
4. Paleovalley Essential C Complex
- Vitamin C Food Supplement with Organic Superfoods for Immune Support - 450 mg per Serving - No Synthetic Ascorbic Acid - No GMO, Fillers or Gluten
POTENT SOURCE OF ORGANIC VITAMIN CUnless you like the taste of orange, it pales in comparison to just one unripe acerola cherry, which contains significantly higher concentrations of natural, full-spectrum vitamin C.
SUPERFOODS FOR IMMUNE SUPPORTVitamin C contributes to the normal function of the immune system that’s why this supplement contains acerola cherry, camu camu berry, and amla berry, three of the planet’s most concentrated natural sources of it.
NO SYNTHETIC ASCORBIC ACIDTaken in organic, concentrated forms, vitamin C found in whole foods such as in this supplement are far more bioavailable to help support nutrient absorption, energy level regulation, and overall immune function.
GENTLY DRIED TO PRESERVE NUTRIENTSOur natural and organic ingredients contain absolutely no gluten, GMO, fillers, corn, soy, or rice and are minimally processed to avoid damaging their fragile nutrients.
100% GENTLY DRIED TO PRESERVE NUTRIENTSOur natural and organic ingredients contain absolutely no gluten, GMO, fillers, corn, soy, or rice and are minimally processed to avoid damaging their fragile nutrients.
I started taking this less than a week ago, I was not symptomatic for anything except mid winter blues. I thought some vitamin C would help boost my mood and bonus- my immune system at the same time. I seriously had no idea how far from myself I was actually feeling. Just after a couple days, I woke up to my normal morning routine; feed the dog, make coffee, shower.... that’s when I felt it, I looked around and felt like a fog had been lifted. I felt like I was grounded, I had energy, I felt happy... I will definitely be keeping a bottle of this magic around at all times!
4.8 out of 5 - 593 global ratings
5 - 6. Best Chewable
5. NOW Foods’ Chewable C 500
If you’re not a fan of swallowing pills, NOW Foods’ chewable vitamin C tablets may be the product for you.NOW Foods is a reputable brand that produces a variety of affordable, high quality nutritional supplements. Each orange-flavored tablet provides a 500-mg dose of vitamin C and contains just 1 gram of added sugar. They’re also 100% vegan and free of major allergens.
NOW Foods prides themselves on their meticulous testing protocols. Each supplement is tested in-house for purity and potency, and all of their manufacturing facilities are certified by the Food and Drug Administration (FDA).
7 - 8. Best GummiesGummy vitamins are one of the hottest trends in nutrition supplements — and understandably so. Whether you’re a kid — or a kid at heart — taking your vitamin C has never been easier or more delicious.
However, although gummy vitamins are convenient and taste great, they should not be confused with candy. It’s important that you don’t exceed the recommended dose, as too much vitamin C could lead to unintended side effects. Like other supplements, be sure to store them away from little ones to avoid a potential overdose.
7. Carlson Labs’ Kid’s Vitamin C Gummies
9 - 10. Best LiquidLiquid supplements are a convenient option for anyone looking for a supplement that can be easily mixed into beverages and absorbed quickly.
9. Pure Encapsulations’ Liposomal Vitamin C Liquid
Pure Encapsulations’ liquid vitamin C is made with a unique, liposomal form of vitamin C that’s encapsulated in sunflower oil. Research suggests that liposomal forms of vitamin C may boost your body’s absorption, so you get more out of each dose (Trusted Source).
Each teaspoon (5 mL) provides 1,000 mg of vitamin C and doesn’t contain any added sugars or artificial sweeteners. All of Pure Encapsulations’ products are certified gluten-free and third-party tested for quality, purity, and potency.
10. Garden of Life’s Organic Vitamin C Spray
11 - 12. Best Vitamin C Powder SupplementPowdered supplements are a great, flexible option. Whether you plan on drinking them mixed into juices and smoothies or want to fill your own capsules with customized doses, powdered vitamin C is the way to go.
11. Swanson’s Vitamin C Powder
Swanson’s vitamin C powder contains nothing but 100% pure, powdered vitamin C.
It dissolves easily into almost any liquid, and you don’t have to worry about any added fillers, sweeteners, or preservatives. Each scoop provides 1,000 mg of vitamin C, but you can tailor the serving size to fit your needs.
When it comes to purity and quality, Swanson holds themselves to exceptionally high standards. All of their supplements undergo in-house and third-party testing, so you can rest assured you’re getting a great product every time.
12. Emergen-C 1000mg Vitamin C Powder
#2 in Vitamin C Supplements of Amazon Best Sellers.
- Includes 30 single-serving packets (0.32 oz. each) of Emergen-C Original Formula in Super Orange flavor
- Each serving provides daily immune support* with more Vitamin C than 10 oranges (Based on the USDA.gov nutrient database value for a large, raw orange).
- Also contains B Vitamins, Electrolytes, and other Antioxidants like Zinc and Manganese
- Flavored vitamin mix is made with natural fruit flavors for a delicious Super Orange taste
- Vitamin C drink mix is a powder that dissolves quickly in water; it’s refreshing and caffeine-free
- Enjoy Emergen-C Original Formula Vitamin C supplement every day for routine wellness
- Emergen-C Original Formula is also available in gummy and chewable forms
- When buying, please check whether the product is "Ships from and sold by Amazon.com" just below the product price to make sure you are receiving this product from the manufacturer of Emergen-C to ensure proper product dating.
How to chooseSelecting the right vitamin C supplement depends on a variety of factors, including the form, quality, dose, and price. There are many forms of vitamin C available (ascorbic acid, sodium ascorbate, calcium ascorbate, liposomal vitamin C etc.) but there is not much evidence that one form is much better than another.
You can also start by considering how you’ll be using the supplement. For instance, if you prefer to take a pill, you’ll want to check out encapsulated vitamin C supplements.
If you don’t like swallowing pills or want to mix it into beverages, your best bet is to consider liquid or powdered supplements.
Next, you want to check the supplement’s quality. Evaluate whether a brand is reputable by exploring their ingredient sourcing and manufacturing standards. A good product will also be tested by third-party organizations, such as USP, Consumer Labs, or NSF International.
Take a look at added ingredients, too. If you’re trying to limit your intake of added sugars, you want to opt for a supplement that doesn’t contain sugar.
Another factor to consider is the dosage. The recommended daily amount of vitamin C for adults is 90 mg for men, 75 mg for women, and up to 120 mg for women who are pregnant or breastfeeding. However, certain medical conditions may require that you take much higher doses (NIH).Children have lower vitamin C requirements, which range from 25–75mg per day, depending on their age. However, it’s not generally advised to give children a vitamin C supplement unless their pediatrician has recommended it.
Note that the Tolerable Upper Intake Level (UL) for vitamin C for men, as well as women ages 19 and above, is 2,000 mg. Meanwhile, the UL for children ranges from 400–1,800 mg, depending on age. Daily intakes at or below these amounts are unlikely to result in any adverse health effects (NIH).Vitamin C supplements come in a wide range of dosage options. If you’re looking for a high dose, it may be more economical and convenient to find a concentrated supplement. This way you won’t be stuck consuming multiple servings of a lower dose option.
Generally, high doses of vitamin C are unnecessary and could contribute to harmful side effects. Only consume high doses if your healthcare provider recommends doing so.
Finally, you want to consider your budget. Some professional-grade brands can be expensive, but keep in mind that a higher price doesn’t necessarily mean a better product. There are plenty of high quality options available at various price points.
Can Vitamin C prevent Coronavirus?
In December 16, 2020, Rob Verkerk, Ph.D., founder and scientific director of the Alliance for Natural Health, announced the launch of an international vitamin C campaign in response to the Nutrients review, which "puts all the arguments and science in one, neat place."
Vitamin C may help shorten the duration and severity of colds caused by other viruses, but this is no guarantee that it will have the same effect on the coronavirus that causes COVID-19.
Additionally, vitamin C is a water-soluble vitamin. It dissolves in water, meaning that excess amounts aren’t stored in your body but instead eliminated through your urine. Taking more vitamin C does not mean that your body is absorbing more (nih).
High dose vitamin C supplements may even cause diarrhea, as they can signal your body to pull water out of the cells and into your digestive tract (NIH).
Moreover, although high dose vitamin C appears promising for COVID-19 treatment, these doses were exceptionally high and given via IV — not taken orally. Additionally, it was only given in cases severe enough to require hospitalization.
Possible side effectsAlthough vitamin C is a natural compound, getting too much of it can cause uncomfortable and potentially serious side effects.
Some of the most common reported side effects include headaches, flushed skin, nausea, and vomiting (NIH). Consuming high doses of vitamin C for prolonged periods may also increase your risk of kidney stones (NIH).
So should you just focus on Vitamin C alone or should you consider other supplements? Vitamin C alone might not be enough as an optimal strategy. A combination and a synergistic mix of supplements would be better.
What if you have seen multiple doctors and they are giving you mixed recommendations? Our recommendation is to stick to a data driven principle and discuss the evidence out there with doctors who are open to be updated with data-driven science and evidence based medicine.