5 Best Vitamin C Powder 2021

Vitamin C, also known as L-ascorbic acid, is a water-soluble vitamin that is required for all body tissue growth, development, and repair. Vitamin C is also an antioxidant that defends your cells against the effects of free radicals. Free radicals are unstable atoms that can damage cells and are linked to diseases, for instance; heart disease, cancer.

Benefits of Vitamin C

Skin health
Remembering that Vitamin C has an important role in collagen formation, Vitamin C may help to heal damaged skin, as well as keeping it nourished and healthy. Moreover Vitamin C is important for antioxidant protection which help to give skin protection against oxidative damage produced by free radicals, UV, and pollution.

Anti-inflammatory effect
In hypertensive and/or diabetic obese patients, vitamin C (500 mg twice daily) has the ability to reduce inflammatory status by lowering hs-CRP, IL-6, and FBG. [Trusted Source]

Boost Immunity
One of the main reasons people take vitamin C supplements is to boost their immunity, as vitamin C is involved in many parts of the immune system.
First, vitamin C helps encourage the production of white blood cells known as lymphocytes and phagocytes, which help protect the body against infection (PubMed).
Second, vitamin C helps these white blood cells function more effectively while protecting them from damage by potentially harmful molecules, such as free radicals.

Other benefits of Vitamin C
A review of 28 studies (Diabetes Care. 2021 Feb) in 1,574 people with type 2 diabetes mellitus, demonstrated that vitamin C supplementation may improve blood sugar control and blood pressure in people with type 2 diabetes.

People who have pneumonia tend to have lower vitamin C levels, and vitamin C supplements have been shown to shorten the recovery time (PubMed, PubMed).

A large review of 29 studies in 11,306 people demonstrated that regularly supplementing with vitamin C at an average dose of 1–2 grams per day reduced the duration of colds by 8% in adults and 14% in children (PubMed).

Interestingly, the review also demonstrated that regularly taking vitamin C supplements reduced common cold occurrence in individuals under high physical stress, including marathon runners and soldiers, by up to 50% (PubMed, PubMed).

Additionally, high dose intravenous vitamin C treatment has been shown to significantly improve symptoms in people with severe infections, including sepsis and acute respiratory distress syndrome (ARDS) resulting from viral infections (PubMed, PubMed).

Best Vitamin C Powder 2021

1. Emergen-C 1000mg Vitamin C Powder

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Dosage: 1000mg
Emergen Vitamin C with Antioxidants, B Vitamins and Electrolytes Price: $17.99 (Pack of 60)
> Vitamin B and C Supplement

Vitamin C drink mix is a powder that dissolves quickly in water; it’s refreshing and caffeine-free. Includes 60 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. Moreover, it 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

4.9 out of 5 – 19,875 global ratings

I begin taking this in late summer and continue through April, I can count on one hand how many colds I’ve had in the past several years, I work childcare so I am exposed to a lot of germs from the toddlers and babies that I care for. This works great for me.

2. Nutricost Ascorbic Acid Powder (Vitamin C)

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Dosage: 1 Gram Per Serving (Scoop Included)
Nutricost Ascorbic Acid Powder 2 LBS Price: $24.95
> Non GMO Vitamin Supplement

Ascorbic Acid (Vitamin C) is an essential vitamin. Vitamin C is an important factor in many of the body’s various life-giving and life-maintaining functions including the successful operation of the immune system. Unfortunately, our bodies cannot naturally produce Vitamin C. This means that although it is an essential vitamin, it must be replenished every day in order for good health to be maintained.

Pure, High-Quality Powder. No Binders Or Fillers. Non-GMO, Gluten-Free, 3rd Party Tested. Made in a GMP Compliant, FDA Registered Facility

4.7 out of 5 – 3,031 global ratings

I bought this product because I was searching for a Vit C powder without GMO. My Dermatologist suggested I make a Vit. C serum for damage skin on my face & chest. I’ve had very good results. I returned to my Dr. after using it only 2 1/2 months & she saw remarkable changes/healing. She wanted me to up it a little for my nose but the rest of my face & my chest had dramatic healthy skin changes. I did not expect to find these changes at my age. I highly recommend this if you want to make a Vit. C serum for rejuvenating your skin & heal or prevent aging skin issues.

3. Doctor's Best Vitamin C Powder

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Dosage: 1 Gram/scoop – Per Serving
Doctor’s Best Vitamin C Powder with Quali-C Price: $25.80
> Best Vitamin C Supplement for Immune System

Doctor’s Best Pure Vitamin C contains Q-C, which is manufactured in Scotland and prized for its quality and reliability. Vitamin C is indispensable to the body for its role in the synthesis of collagen, carnitine, and certain brain chemical transmitters.

Abundant clinical research confirms Vitamin C’s fundamental support for the immune system, brain, eyes, heart and circulation, and all organ systems.* Vitamin C is also an electron donor, supporting numerous enzymes and enhancing the body’s total antioxidant potential.*

*These statements have not been evaluated by the Food and Drug Administration. This product in not intended to diagnose, treat, cure or prevent any disease.

4.7 out of 5 – 1,542 global ratings

I’m very impressed with Quali-C ever since I’ve been using it. I have zero digestive problems from it and it seems very effective. I had a major toothache that disappeared overnight once I started using this (took it every hour for 3-4 hours) and I also completely disappeared an oncoming cold doing the same. It’s has very little taste, and you need a smaller amount to get the required dose (measuring spoon supplied). Just a tad pungent as you’d expect it to be, but it’s easy to get used to and I’m actually starting to like it. I just use it in water but in a smoothie it would be pretty undetectable. It’s extremely fine, not gritty at all, and dissolves instantly. I’m on subscribe & save with this now because I like it so much.

4. NOW Supplements, Vitamin C Powder

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Dosage: 1/4 level teaspoon (1.1g)
NOW Supplements, Vitamin C Crystals (Ascorbic Acid) Price: $25.01

Vitamin C is a water soluble nutrient well known for its vital role in the immune system.* Vitamin C is also necessary for the production of collagen (a structural protein in connective tissue) and is therefore important for skin, bone, and joint health.* Vitamin C is needed for amino acid metabolism, neurotransmitter synthesis, and the utilization of many nutrients, such as folic acid and iron.* It is also a highly effective antioxidant that can help maintain healthy tissues by neutralizing free radicals generated during normal metabolism and exposure to environmental stressors.*

Natural color variation may occur in this product.

4.7 out of 5 – 1,375 global ratings

Kids can’t tell i sneak it in their alkaline water/orange juice in the mornings! It’s keeping my kids very healthy! Used an extra two doses when my 2 year old came down with HFM recently and it knocked the sickness out in 14 hours!! Amazinnnnnng! My daughter had HFM years ago and she suffered for nearly a week!
Granted i use Vit c in conjunction with colloidal silver and elderberry but i believe the C was most helpful! Thank you! Ordering again soon as i run out fast between three kids!

5. Pure Synergy Pure Radiance C

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Dosage: 1/4 rounded teaspoon (975mg)
Pure Synergy Natural Vitamin C with Organic Camu Camu Extract Price: $28.00
> Best Natural Vitamin C Supplement

Pure Radiance C unites our organic camu camu and organic acerola cherries with 7 antioxidant-rich organic berries and fruits to yield a 100% natural form of vitamin C.

Vitamin C Powerhouse | Famed for its vitamin C content, the acerola berry also contains free-radical busting anthocyanins and many other valuable phytonutrients. Together, these compounds help fight oxidation both inside and out, keeping your cells and whole body flourishing. Skin cells reap the rewards too, with potential benefits for healthy collagen production and skin tone.

4.7 out of 5 – 1,663 global ratings

I was having migraines for the first time in my life (I’ve always had severe headaches that last days but never like the previous months) I was reading about vitamin c therapy for migraines. I researched a good brand and I was drawn to this particular one. Two days into taking the powder my headaches completely went away. Blew my mind! I Have been headache free for about two weeks now. Got my life back.


How Do I Choose Vitamin C?

Selecting 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. 

The ascorbate forms may be easier on your stomach, but you will still run a risk of developing loose stools at too high a dose. 

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.

In contrast, all steady state comparative bioavailability studies in humans have shown no differences between synthetic and natural vitamin C, regardless of the subject population, study design or intervention used.

Can Vitamin C prevent Coronavirus?

A review, published December 7, 2020, in the journal Nutrients, recommended the use of vitamin C as an additional therapy for respiratory infections, sepsis and COVID-19.

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."

However, large controlled studies demonstrating vitamin C's effectiveness in COVID-19 are still lacking. There are many such studies underway and you can review the status of these trials on clinicaltrials.gov. As of January 2021, more than 50 studies have been launched to investigate the benefits of vitamin C against COVID-19.

The National Institutes (NIH) Panel has determined that there are insufficient data to recommend either for or against the use of Vitamin C for the treatment of non-critically ill COVID-19 (last updated November 2020).

At the Cleveland Clinic, researchers are enrolling people into a study to see if vitamin C or zinc — or a combination of the two — can reduce the duration of COVID-19 symptoms. Patients will be given the supplements after they have tested positive for COVID-19.

Currently, no definitive evidence supports the use of oral vitamin C supplements to prevent COVID-19.

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.

Your best bet is to eat a diet that’s full of a variety of fruits and vegetables, which naturally provide all the vitamin C a healthy person needs — along with many other nutrients and antioxidants.

Possible side effects

Although 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).

Always consult your healthcare provider prior to adding any nutritional supplement to your routine.


Vitamin C is an essential nutrient that plays a diverse role in keeping your body healthy. Although vitamin C deficiency is rare in developed countries, it can cause serious health problems that, if left untreated, could be fatal.If you have trouble getting enough vitamin C from your diet, supplements are a great option. They come in a variety of physical forms, dosages, and price points.

That said, many vitamin C supplements in the market are above the US RDA. It’s important to seek a doctor’s advice if you intend to take high dose vitamin C on a long term basis. To be on the safe side, you may also request for your kidney functions to be monitored.

Always consult your doctor prior to adding any new supplements to your health and wellness regimen. 

This article was adapted from Healthline: https://www.healthline.com/nutrition/best-vitamin-c-supplement




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