Best Vitamin C Supplements of 2025

Elisa Drew Avatar
Elisa Drew
Last Updated: Jan 14, 2025

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Vitamin C supplements are a popular choice for those looking to boost their immune system and overall health. These supplements are available in various forms, including tablets, capsules, and powders. They are made from ascorbic acid, a water-soluble vitamin that cannot be produced by the body naturally. Vitamin C supplements are commonly used to prevent or treat colds, flu, and other infections. They are also known for their antioxidant properties, which help protect the body from free radicals that can cause damage to cells. It is important to note that while vitamin C supplements can be beneficial, they should not be used as a substitute for a healthy diet rich in fruits and vegetables.

At a Glance: Our Top Picks

Nature's Bounty Vitamin C Tablets Cover #TOP 1
Nature's Bounty Vitamin C Tablets
ftb score rating icon 9.8
Nature's Bounty Vitamin C + Rose Hips Caplets Cover #TOP 2
Nature's Bounty Vitamin C + Rose Hips Caplets
ftb score rating icon 9.7
NOW Vitamin C-1,000 with Bioflavonoids Cover #TOP 3
NOW Vitamin C-1,000 with Bioflavonoids
ftb score rating icon 9.5

Top 10 Vitamin C Supplements

#TOP 1

Nature's Bounty Vitamin C Tablets

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Nature's Bounty Vitamin C Tablets Cover
Nature’s Bounty Vitamin C, Supports a Healthy Immune System, Vitamin Supplement, 500mg, 250 Tablets

Nature's Bounty Vitamin C Tablets are a leading vitamin for immune support and a powerful antioxidant that fights free radicals. With 500mg of Vitamin C per serving, these tablets nourish the immune system by supporting the functioning of white blood cells. The tablets are gluten-free, contain no preservatives, sodium, or artificial colors or sweeteners. These high potency tablets can be taken up to four times daily, preferably with food, to help maintain a healthy immune system all year long.

What We Like
Effective immune support
High-quality ingredients
Easy to swallow
Great value for price
Long-lasting supply
What We Don't Like
Strong tart flavor
Hard texture
#TOP 2

Nature's Bounty Vitamin C + Rose Hips Caplets

Nature's Bounty Vitamin C + Rose Hips Caplets Cover
Nature's Bounty Vitamin C + Rose Hips, Immune Support, 1000mg, Coated Caplets, 100 Ct

Boost your immune system with Nature's Bounty Vitamin C + Rose Hips Caplets. This supplement contains 1000mg of Vitamin C, which is one of the best antioxidants for fighting free radicals that may cause oxidative stress and premature aging. It also supports the functioning of white blood cells, which are vital components of the immune system. With the added benefit of 20mg of Rose Hips, this supplement is the easiest way to increase your daily intake of this important vitamin. Plus, it is non-GMO, gluten-free, and sugar-free, and contains no artificial colors or sweeteners.

What We Like
Quick dissolving
Pleasant smell
Good value
Effective immune support
What We Don't Like
Large pills
Hard to swallow
#TOP 3

NOW Vitamin C-1,000 with Bioflavonoids

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NOW Vitamin C-1,000 with Bioflavonoids Cover
NOW Foods Supplements, Vitamin C-1,000 with 100 mg of Bioflavonoids, Antioxidant protection*, 100 Veg Capsules

NOW Vitamin C-1,000 with Bioflavonoids is a high-quality vitamin C supplement that provides antioxidant protection. Each veg capsule contains 1,000 mg of vitamin C along with 100 mg of bioflavonoids. Vitamin C is known for its immune-boosting properties and its ability to support overall health and well-being. The addition of bioflavonoids enhances the absorption and effectiveness of vitamin C in the body. This supplement is free from common allergens such as wheat, gluten, soy, milk, egg, fish, shellfish, and tree nuts, making it suitable for individuals with dietary restrictions. It is produced in a GMP facility, ensuring quality and purity. With 100 veg capsules per container, NOW Vitamin C-1,000 with Bioflavonoids is a convenient and reliable choice for daily antioxidant support.

What We Like
High dosage options available
Easy to swallow capsules
Third-party testing for quality
Good price point
Boosts immune system
What We Don't Like
Capsule size may be larger
Delivery issues reported
#TOP 4

Sports Research Vitamin C 1000mg Supplement

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Sports Research Vitamin C 1000mg Supplement Cover
Sports Research High Potency Vitamin C Supplement - Vegan Veggie Capsules for Antioxidant Activity & Immune Support - Non-GMO Verified & Gluten Free - Ascorbic Acid Vitamin C 1000mg, 240 Count

If you are looking for a high-quality Vitamin C supplement to support your immune system and overall health, Sports Research Vitamin C 1000mg is an excellent choice. With this supplement, you can conveniently add more of this essential micronutrient to your diet. Vitamin C is a powerful antioxidant that helps healthy cells reproduce, keeping your body running at its best. Additionally, this product is Non-GMO Project Verified and Vegan Certified, made in cGMP compliant facilities in the United States, and comes with a 90-day money-back guarantee for your peace of mind.

What We Like
Affordable bulk supply
Easy to swallow capsules
High-quality, non-GMO formula
Long-lasting 8-month supply
Supports immune function
What We Don't Like
High doses may cause upset
#TOP 5

Thorne Vitamin C with Citrus Bioflavonoids

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Thorne Vitamin C with Citrus Bioflavonoids Cover
THORNE Vitamin C - Blend of Vitamin C and Citrus Bioflavonoids from Oranges - Support Immune System, Production of Cellular Energy, Collagen Production and Healthy Tissue - Gluten-Free - 90 Capsules

Thorne Vitamin C is a gluten-free dietary supplement that combines vitamin C with natural citrus bioflavonoids, providing immune support and antioxidant benefits. It promotes collagen production, which enhances skin, nail, and hair health, making it an important nutrient for wound healing and post-surgical recovery. It is free from gluten, eggs, tree nuts, peanuts, dairy, yeast, soy, fish, or shellfish, making it a safe choice for people with allergies. Thorne is a trusted brand among champions and pro teams, and is the only supplement manufacturer to collaborate with Mayo Clinic on wellness research and content. Thorne is also a proud partner of 11 U.S. Olympic Teams.

What We Like
Effective vitamins for health
Clean ingredients
Improves energy levels
No stomach upset
Timely delivery
What We Don't Like
Possible heartburn on empty stomach
#TOP 6

Nature Made Extra Strength Chewable Vitamin C Dietary Supplement

Nature Made Extra Strength Chewable Vitamin C Dietary Supplement Cover
Nature Made Extra Strength Dosage Chewable Vitamin C 1000 mg per serving, Dietary Supplement for Immune Support, 90 Tablets, 45 Day Supply

The Nature Made Extra Strength Chewable Vitamin C Dietary Supplement is an immune support supplement that contains 1000mg of Vitamin C per serving. It is an extra strength dosage chewable Vitamin C antioxidant supplement that supports immune health and offers antioxidant support. Made in the USA with quality global ingredients, this Vitamin C supplement provides adults with necessary vitamins to produce collagen to help support healthy skin. It comes in the original orange flavor with two tablets recommended to be taken daily with a meal. No color or artificial flavors are added.

What We Like
Easy to chew
Pleasant flavor
Effective immune support
Good price
High vitamin C dosage
What We Don't Like
Can be sour
#TOP 7

Amazon Elements Vitamin C 1000mg, Supports Healthy Immune System, Vegan, 300 Tablets

Amazon Elements
Amazon Elements Vitamin C 1000mg, Supports Healthy Immune System, Vegan, 300 Tablets Cover
Amazon Elements Vitamin C 1000mg, Supports Healthy Immune System, Vegan, 300 Tablets, 10 month supply

Amazon Elements Vitamin C 1000mg is a vegan and gluten-free supplement that supports a healthy immune system. It contains 1000mg of Vitamin C per serving, and each bottle has 300 tablets, which is a 10-month supply if taken daily at the listed serving size. The product is made in a GMP facility in the USA and does not contain any artificial colors, flavors, or chemical preservatives. Customers should be available during product delivery to avoid damage due to exposure to heat or sunlight.

What We Like
High-quality ingredients
Effective immune support
Vegan-friendly
Convenient 10-month supply
Pleasant taste and easy to swallow
What We Don't Like
Large tablet size
#TOP 8

Nature Made Vitamin C 1000mg Tablets

Nature Made Vitamin C 1000mg Tablets Cover
Nature Made Extra Strength Vitamin C 1000 mg, Dietary Supplement for Immune Support, 100 Tablets, 100 Day Supply

Nature Made Vitamin C 1000 mg Tablets are a gluten-free dietary supplement that supports immune health, provides antioxidant support, and aids in iron absorption. These high-quality Vitamin C supplements help support your immune system, promote healthy skin, and are easy to take, with one 1000mg tablet taken daily with water and a meal. These antioxidant supplements are USP verified, gluten-free, and contain no artificial flavors or preservatives. Nature Made is the #1 Pharmacist Recommended Vitamin & Supplement Brand, so you can trust the quality of these Vitamin C supplements.

What We Like
Good quality and value
Supports immune health
No bitter taste
High daily allowance
Gluten-free, no preservatives
What We Don't Like
Large size, harder to swallow
Color inconsistency noted
#TOP 9

NutriFlair Liposomal Vitamin C 1600mg Capsules

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NutriFlair Liposomal Vitamin C 1600mg Capsules Cover
NutriFlair Liposomal Vitamin C 1700mg, 180 Capsules - High Absorption, Fat Soluble VIT C, Antioxidant Supplement, Higher Bioavailability Immune System Support & Collagen Booster, Non-GMO, Vegan Pills

NutriFlair Liposomal Vitamin C 1600mg Capsules is a high-quality, non-GMO, vegan supplement that is designed to provide maximum health benefits. With each bottle containing 180 vegetable capsules, this product is a full 3 months' supply. The groundbreaking 1600mg Liposomal Vitamin C Complex based on Liposomal technology provides superior absorption, nervous system support, collagen production boost, and more benefits. This product is manufactured in the USA in a duly registered, approved, and inspected state-of-the-art facility that adheres strictly to Good Manufacturing Practices (GMP).

What We Like
High absorption rate
Generous supply of capsules
Easy on the stomach
Boosts energy levels
Effective for immune support
What We Don't Like
Can cause slight acidity
#TOP 10

Nutricost Vitamin C with Rose Hips 1025mg, 240 Capsules

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Nutricost Vitamin C with Rose Hips 1025mg, 240 Capsules Cover
Nutricost Vitamin C with Rose HIPS 1025mg, 240 Capsules - Vitamin C 1,000mg, Rose HIPS 25mg, Premium, Non-GMO, Gluten Free Supplement

Nutricost Vitamin C with Rose Hips supplement comes in a bottle containing 240 capsules, in which one 1025mg capsule contains 1,000mg Vitamin C and 25mg Rose Hips. Being Non-GMO, Gluten-free, and 3rd party tested, it is manufactured in a GMP compliant, FDA registered facility. This supplement is perfect for individuals looking to improve their immune system, boost collagen production, and support healthy aging.

What We Like
Reliable and affordable
Boosts immunity
Easy to swallow
Good absorption
Great value for money
What We Don't Like
Shipping issues with USPS
Buying Guide Image

Basic Information to Help You Figure out the Best Vitamin C Supplements

Introduction to Vitamin C Supplements

Vitamin C is an essential nutrient that plays a key role in maintaining a healthy immune system. It is a water-soluble vitamin, meaning that it is not stored in the body and must be consumed regularly through the diet. Unfortunately, many people do not get enough vitamin C from their diet, making vitamin C supplements an attractive option. However, with so many different brands and types of vitamin C supplements on the market, choosing the right one can be overwhelming. In this article, we will provide some tips to help you make an informed decision when choosing a vitamin C supplement.

Factors to Consider

When choosing a vitamin C supplement, there are several factors you should consider. These include the form of the supplement, the dosage, and the potential for side effects.

Form

Vitamin C supplements are available in a variety of forms, including tablets, capsules, chewables, and powders. Tablets and capsules are the most common forms of vitamin C supplements, but chewables and powders can be a good option for people who have difficulty swallowing pills. Additionally, some people prefer powders because they can be mixed into drinks and are easy to adjust the dosage.

Dosage

The recommended daily allowance (RDA) for vitamin C is 75-90 mg per day for adult women and 90-110 mg per day for adult men. However, some people may require higher doses of vitamin C, depending on their age, health status, and lifestyle. For example, smokers and people exposed to pollution or other sources of oxidative stress may need higher doses of vitamin C to maintain a healthy immune system. It is important to consult with a healthcare provider before taking high doses of vitamin C, as excessive intake can cause side effects such as gastrointestinal discomfort and kidney stones.

Side Effects

Vitamin C is generally considered safe when taken in recommended doses. However, some people may experience side effects from vitamin C supplements, such as stomach upset, diarrhea, and bloating. These side effects are typically mild and can be reduced by taking the supplement with food. In rare cases, excessive intake of vitamin C can cause more serious side effects, such as kidney stones and liver damage. It is important to talk to your healthcare provider before taking high doses of vitamin C, especially if you have a history of kidney or liver problems.

Choosing a Brand

When choosing a brand of vitamin C supplement, it is important to consider the quality and purity of the product. Look for supplements that are made by reputable manufacturers and have been tested by third-party organizations such as ConsumerLab or NSF International. These organizations test supplements for potency, purity, and safety to ensure that they meet industry standards.

In addition, look for supplements that have been certified as organic or non-GMO. These certifications indicate that the product has been made with high-quality, natural ingredients and does not contain genetically modified organisms.

Conclusion

Choosing the right vitamin C supplement can be a daunting task, but by considering factors such as the form, dosage, and potential for side effects, and selecting a high-quality brand, you can find a supplement that meets your needs and helps support a healthy immune system.

Frequently Asked Questions (FAQs)

1. Is it OK to take vitamin C supplements everyday?

It is generally safe to take vitamin C supplements daily, but it is important to follow the recommended daily amount. For women, the recommended daily amount is 75 milligrams (mg) and for men, it is 90 mg. During pregnancy, 120 mg is recommended. It is advised not to exceed the upper limit of 2,000 mg per day for all adults.

2. What are the side effects of taking vitamin C with zinc?

Taking vitamin C with zinc can potentially cause side effects such as an upset stomach, vomiting, severe diarrhea, constipation, and muscle weakness. It is important to be aware of these possible side effects and consult with a healthcare professional if any concerns arise.

3. What are the symptoms of low vitamin C?

Low levels of vitamin C can lead to symptoms such as fatigue, depression, connective tissue defects (such as gingivitis, petechiae, rash, internal bleeding, impaired wound healing), and impaired bone growth in infants and children. Diagnosis is usually based on clinical evaluation, and treatment involves oral vitamin C supplementation.

4. What is the most absorbed form of vitamin C?

Liposomal vitamin C is considered to have improved bioavailability or absorption properties. It is formulated with a fat-soluble covering that helps the ascorbic acid molecule pass through the digestive tract more easily, leading to increased absorption.

5. Are there any negatives to taking vitamin C?

Taking excessive amounts of vitamin C can result in side effects such as nausea, vomiting, diarrhea, heartburn, and stomach cramps or bloating. It is important to adhere to the recommended daily amount and consult with a healthcare professional if experiencing any adverse effects.

6. Why shouldn't you take zinc and vitamin C together?

There is no reason to be concerned about taking zinc and vitamin C together. In fact, they can have a synergistic relationship and both contribute to immune function. When taken as directed, these vitamins and minerals are beneficial for overall health.

Editor's Notes

During our vitamin c supplement research, we found 24 vitamin c supplement products and shortlisted 10 quality products. We collected and analyzed 938,853 customer reviews through our big data system to write the vitamin c supplements list. We found that most customers choose vitamin c supplements with an average price of $18.72.

The vitamin c supplements are available for purchase. We have researched hundreds of brands and picked the top brands of vitamin c supplements, including Nature's Bounty, NOW Foods, Sports Research, THORNE, Nature Made. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Elisa Drew Avatar

Elisa Drew is a really professional copywriter specializing in baby products with five years of experience working as a pediatrician once. She has published a series of baby books purchased by over thirty thousand people in the United States.

Vitamin C Supplements Comparison Table

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Brand Nature's Bounty Nature's Bounty NOW Foods Sports Research THORNE Nature Made Amazon Elements Nature Made NutriFlair Nutricost
Item Form Tablet Caplet Capsule Capsule Capsule Tablet Tablet Tablet Capsule Capsule
Primary Supplement Type Vitamin C Vitamin C Vitamin C Vitamin C Vitamin C Vitamin C Vitamin C Vitamin C Vitamin C Vitamin C
Diet Type Vegetarian Gluten Free Halal, Kosher, Vegan Vegan Gluten Free Gluten Free Vegan Gluten Free Vegan Gluten Free
Flavor Unflavored Unflavored Unflavored Unflavored Citrus Orange Vitamin C No Artificial Flavors Orange Flavor Is Not Applicable To This Product
FTB Score
ftb score rating icon 9.8
ftb score rating icon 9.7
ftb score rating icon 9.5
ftb score rating icon 9.5
ftb score rating icon 9.3
ftb score rating icon 9.3
ftb score rating icon 9.3
ftb score rating icon 9.2
ftb score rating icon 9.1
ftb score rating icon 9.0
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