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THORNE - Vitamin C 500 mg - Blend of Vitamin C and Citrus Bioflavonoids from Oranges - Supports Immune System, Cellular Energy Production & Collagen Synthesis* - Third-Party Certified - 90 Servings

  • Based on 3,590 reviews
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Features

  • Immune Support: Vitamin C formulated with natural citrus bioflavonoids for added antioxidant benefits resulting in better cellular protection against free radicals within the body*
  • Healthy Skin: Promotes collagen production, which enhances skin, nail, and hair health and supports healthy tissue and cartilage formation*
  • Detox Support: Promotes the body's natural ability to eliminate toxins and benefits liver health by helping increase glutathione and other potent antioxidants*
  • Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants
  • Trusted: Thorne is trusted by 100+ professional sports teams and the #1 most recommended clinical brand by consumers and health-care practitioners (Based on a 2026 independent survey of US supplement consumers and health-care practitioners)

Description

Vitamin C 500 mg Basic Nutrients Creatine Magnesium Glycinate Super EPA Berberine Magnesium Bisglycinate What makes Thorne supplements high quality? Thorne produces high-quality supplements through rigorous testing, well-researched ingredient sourcing, and strict manufacturing standards. We avoid unnecessary additives, binders, and fillers that may interfere with nutrient absorption. How does Thorne test its supplements for quality? To confirm the purity of our ingredients, the potency of our formulas, and the absence of all contaminants, we carry out a minimum of four rounds of testing on every product we manufacture. 100+ Thorne employees are dedicated to ensuring quality. Are Thorne supplements clinically tested and safe? Thorne partners with researchers and conducts clinical trials to support the efficacy of our products. Our team of doctors and medical experts substantiate each ingredient in every formula based on extensive clinical research and medical literature. Why are Thorne products more expensive than other supplements? When it comes to the health of our customers, we never settle. Thorne products may be priced higher than some others because of our commitment to quality at every step. We don’t simply meet the standard in dietary supplements — we set the standard. Where are Thorne supplements made and where are the ingredients sourced from? Located in South Carolina, Thorne manufactures supplements in the USA using globally sourced ingredients. When it comes to ingredient sourcing, we seek out only the highest-quality ingredients, selecting each one for its purity and effectiveness. Visit the Store Visit the Store Visit the Store

Product Dimensions ‏ : ‎ 2.58 x 2.58 x 4.5 inches; 2.88 ounces


Item model number ‏ : ‎ C154


Date First Available ‏ : ‎ September 10, 2021


Manufacturer ‏ : ‎ Thorne Research


Best Sellers Rank: #1,753 in Health & Household (See Top 100 in Health & Household) #3 in Vitamin C Supplements


#3 in Vitamin C Supplements:


Customer Reviews: 4.8 4.8 out of 5 stars (3,590)


Brand Name: THORNE


Item Form: Capsule


Primary Supplement Type: Vitamin C


Diet Type: Gluten Free


Flavor: Orange


Product Benefits: Immune Support


Age Range Description: Adult


Specific Uses For Product: Skin


Special Ingredients: Citrus Bioflavanoids


Number of Items: 1


Dosage Form: Capsule


UPC: 693749012481


Manufacturer: Thorne Research


Model Number: C154


Manufacturer Part Number: C154


Unit Count: 90 Count


Item Weight: 2.88 ounces


Item Dimensions: 2.58 x 2.58 x 4.5 inches


Color: Orange


Material Type Free: en_AE


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: within 30 days

This item is non-returnable:

Non-returnable due to Food safety reasons

View our full returns policy here.

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Top Amazon Reviews


  • High-Quality, Effective, and Gentle on the Stomach!
THORNE Vitamin C – High-Quality, Effective, and Gentle on the Stomach! I’ve been taking THORNE Vitamin C for a while now, and it has quickly become my go-to vitamin C supplement. THORNE is known for its high-quality, science-backed supplements, and this one definitely lives up to the reputation. Pure & High-Quality Ingredients One of the things I appreciate most is that THORNE uses pure, well-sourced ingredients without unnecessary additives, artificial fillers, or allergens. It’s free from gluten, dairy, and soy, making it a great choice for those with sensitivities. Easy on the Stomach Unlike some other vitamin C supplements that can cause stomach irritation, this one is gentle and well-tolerated, even when taken on an empty stomach. No bloating or discomfort, which is a huge plus! Effective Immune & Antioxidant Support I’ve noticed an improvement in my immune health and overall energy levels since taking this supplement regularly. It also supports skin health and collagen production, making it a great all-around vitamin for wellness. Capsule Form – Convenient & Absorbable The capsule form is easy to swallow, and it absorbs well without the chalky taste or acidity that comes with some powdered vitamin C options. Final Verdict If you’re looking for a high-quality, pure, and effective vitamin C supplement, THORNE Vitamin C is an excellent choice. It’s gentle, highly absorbable, and backed by a trusted brand. Highly recommended! ... show more
Reviewed in the United States on February 24, 2025 by Wade

  • High Quality and Easy to Tolerate
I started taking this after my vitamin C levels came back lower than my doctor liked. After about a month of consistent use, I’ve been pleased with how easily it fits into my daily routine. I've notices a small energy boost as well which was direly needed. I appreciate that this formula combines vitamin C with citrus bioflavonoids rather than being just a basic standalone tablet. In my experience, it’s been gentler on my stomach than some other vitamin C supplements I’ve tried. I tend to be sensitive to certain supplements, especially larger or harsher formulas, and this one has been easy for me to tolerate. The capsules are a manageable size and don’t have a strong aftertaste. The ingredient list is straightforward, and the overall quality feels consistent, which is something I value in supplements. Everyone’s needs are different, but this has been a solid addition to my routine. If you’re looking for a well-formulated vitamin C option, this one has worked well for me. ... show more
Reviewed in the United States on February 13, 2026 by Rooted & Reviewed

  • Good Product. I Would Highly Recommend.
This is a good brand and good product. I prefer this brand over others. It works well and doesn't cause any stomach discomfort for me. The pill is on the larger side, I would prefer it to be smaller, but overall it's not bad. There is no after taste after swallowing. It works well to provide the extra vitamin C that I need. It is gluten free and made in USA. I Would Highly Recommend. ... show more
Reviewed in the United States on February 5, 2026 by Laura F

  • Very digestible
These are high quality vitamins you can't go wrong with them there are a little bit more spending than the cheap ones but they're worth every penny
Reviewed in the United States on May 21, 2026 by Laurie

  • One of the better Vit C supplement
I've been using this along with Iron supplement to improve absorption every morning. I've seen improvements in energy level and my immunity has gradually increased over the period of few months.
Reviewed in the United States on May 1, 2026 by Jane

  • Delivers high quality of vitamin C
I’ve been using this brand for several years. I find their brands very high-quality products. This vitamin comes in a capsule form, easy to swallow.
Reviewed in the United States on June 21, 2026 by Diane Lego

  • Smaller doses are better for absorption!
This is an excellent product and I like the lower dosage per tablet, since we only absorb 200-500mg per dose, which remains in our system around only 5 hours, and the rest we pee out. We take one tablet morning and again in the evening, several hours before bed so we're not having to make a lot of bathroom trips during the night. Use your own good judgement! ... show more
Reviewed in the United States on September 9, 2025 by DDB

  • quality product
I use this daily, 2x. good brand
Reviewed in the United States on June 18, 2026 by mouse

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