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Thorne Research, Buffered C Powder, 8 oz (227 g)

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Thorne Research, Buffered C Powder, 8 oz (227 g)

In Stock
  • Expiration Date: Jan 2019
  • Shipping Weight:
    0.77 lbs
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  • Product Code: THR-15502
  • UPC Code: 693749155027
  • Package Quantity: 8 oz (227 g)
  • Dimensions:
    3.7 x 3.7 x 3.8 in, 0.65 lbs
    Switch to Metric units
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Product Overview


  • Dietary Supplement
  • Hypoallergenic

For individuals sensitive to the acidity of pure ascorbic acid

  • A buffered vitamin C supplement for individuals with a sensitive or compromised digestive system
  • Made with pure, crystalline vitamin C
  • An inexpensive source of vitamin C and the major minerals
  • The easiest way to take a higher amount of vitamin C

High amounts of vitamin C – several grams daily – have been advocated for optimizing both immune function and antioxidant support. Evidence for the efficacy of consuming high amounts of ascorbic acid is due in large part to the groundbreaking research conducted in the 1970s and 1980s by two-time Nobel Prize winner, Linus Pauling, PhD.

Taking high amounts of vitamin C can be a challenge for individuals who have sensitive or compromised digestive systems. For these individuals, Thorne Research has developed Buffered C Powder. Each scoop supplies the same pure, crystalline vitamin C found in Thorne's Pure Ascorbic Acid, along with a blend of calcium, magnesium, and potassium mineral ascorbates that serve as a buffer, allowing sensitive individuals to take large amounts of vitamin C with ease and comfort. In addition to 2,350 mg of vitamin C in each scoop, Buffered C Powder provides 350 mg each of calcium and magnesium and 99 mg of potassium.

Suggested Use

Add 1 heaping (5.3g) scoop to 8 ounces of water one to two times daily or as recommended by your health-care practitioner.


Tamper Evident: Use only if bottle is sealed.

If pregnant, consult your health care-practitioner before using this product.

Store tightly sealed in a cool, dry place.

Supplement Facts
Serving Size: One Scoop
Servings per Container: 42
  Each Heaping (5.3g) Scoop Contains % Daily Value
Vitamin C (as Ascorbic Acid) 2.35 g 3,917%
Calcium (as Ascorbate reacted from Calcium Carbonate and Ascorbic Acid) 350 mg 35%
Magnesium (as Ascorbate reacted from Magnesium Carbonate and Ascorbic Acid) 350 mg 88%
Potassium (as Ascorbate reacted from Potassium Bicarbonate and Ascorbic Acid) 99 mg 3%
Daily Value (DV)
iHerb Customer Reviews

I believe this is an excellent product and I have been using it for many years

Posted by iHerb Customer on Jul 04, 2017 | Verified Purchase

I believe this is an excellent product and I have been using it for many years

Thanks for your feedback!

Buffered C Powder is part of my daily health routine

Posted by 5702066026463097184 on Jun 30, 2017 | Verified Purchase

I have been taking Thorne Research Products for years and Buffered C Powder is one of my favorites. I take it every morning with Thorne Medibulk and the results are amazing. As a kid and beyond I have had difficulties with elimination. With these two products I am now enjoying regularity on a consistent basis.

Thanks for your feedback!


Posted by 5211837593567290189 on Feb 19, 2017 | Verified Purchase

I have been using this FOREVER. My Father got me "addicted" to this about the time of its introduction .. So since it keeps me well when others around me have had colds for weeks, or the flu...I just keep taking my powdered, buffered Vitamin C. My husband is now "addicted" as well, just one hint of a sniffle or sore throat, a dose of this, and all is well. LOVE,LOVE,LOVE THIS STUFF!!!!

Thanks for your feedback!

Good product!

Posted by 5201415517387073563 on Jan 26, 2017 | Verified Purchase

Not my favourite taste, but it does what I need it to!

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Powerful antioxidant

Posted by 5511968977392680496 on Dec 23, 2016 | Verified Purchase

This buffered C is great for smoothies. I know that it delivers the vitamins quickly to your system and without loss like so many tablet vitamins. I've been using it for about 7 months and will keep using it.

Thanks for your feedback!