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Kirkman Labs, Buffered Vitamin C Powder, Unflavored, 7 oz (198.5 g)

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Kirkman Labs, Buffered Vitamin C Powder, Unflavored, 7 oz (198.5 g)

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Kirkman Labs, Buffered Vitamin C Powder, Unflavored, 7 oz (198.5 g)

In Stock
  • Expiration Date: November 2020
  • Shipping Weight:
    0.59 lbs
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  • Product Code: KIM-02171
  • UPC Code: 812325021710
  • Package Quantity: 7 oz
  • Dimensions:
    2.9 x 2.9 x 3.3 in, 0.5 lbs
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Frequently Purchased Together
Product Overview


  • Casein & Gluten Free
  • Bio-Max Series
  • Hypoallergenic
  • Dietary Supplement

Ultra Tested - Tested for More Than 950 Contaminants!

  • Heavy Metals
  • Bacteria
  • Yeast
  • Mold
  • Pesticides & More...

Kirkman developed our buffered Vitamin C products in response to the need for a higher daily dose of vitamin C (one to three grams) that physicians were recommending to our customers.

At the time, Kirkman offered two forms of vitamin C — our popular chewable tablets and hypoallergenic capsules.  These are dosed at 250 mg, but for customers who needed a higher dose, these products may have been impractical or inconvenient.

Kirkman's Buffered Vitamin C Unflavored Powder offers 1100 mg (1.1 gm) in each recommended serving size of ¼ teaspoon.  It is easy to administer and is great tasting.  Our Buffered Vitamin C Powder is formulated with sodium, potassium and magnesium ascorbates to produce a buffered, acid balanced product.  This product is very gentle on the stomach because the normal high acidity of ascorbic acid is counteracted by the ascorbates.

This product is part of Kirkman's Bio-Max series, ensuring a form of vitamin C that is formulated to be extremely high in absorption qualities.  The Bio-Max series of Kirkman products utilizes the form of the specific nutrient which has been clinically shown to be the best or one of the best forms of that nutrient with respect to absorption and bioavailability.

Vitamin C is the most popular vitamin supplement in the United States.  The human body does not manufacture its own vitamin C, therefore dietary sources and supplementation must be relied on to prevent deficiency.

The list of health conditions where vitamin C has shown promise is very long. Its value in the good health of children is extremely important for the following reasons:

  • Vitamin C supports the immune system
  • Vitamin C is a powerful antioxidant and possesses free radical activity
  • Collagen is the main protein substance in the human body.  It holds our body together in the form of tissue, tendons, cartilage, etc.  Vitamin C is essential in the production of collagen.

Vitamin C's role in immune system support is one of the key elements that makes it very critical for supplementation in children.  Vitamin C assists white blood cell function, including antibody levels and responses. It is imperative that growing, active children not be deficient in this nutrient.

Suggested Use

1/4 teaspoon of powder 1-3 times daily or as directed by a physician.

Other Ingredients

Sodium ascorbate, ascorbic acid, xylitol, silicon dioxide, magnesium ascorbate, potassium ascorbate.

Free Of: Sugar, starch, soy, wheat, casein, gluten, milk, egg, preservatives, yeast, gelatin, artificial flavorings, colorings, peanuts, tree nuts or fish.


Store in a cool dry place and tightly capped.

Keep out of the reach of children.

This product may develop moisture spotting over time, but the potency is unaffected.


While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
Supplement Facts
Serving Size: 1/4 teaspoon (1.25 grams)
Servings Per Container: 158
Each Serving Contains Amount Per Serving % Daily Value
Vitamin C 1,100 mg 1,833%
iHerb Customer Reviews


Posted by iHerb Customer on January 19 2018 | Verified Purchase

Very fresh vitamin C taste . I am taking with MSM powder for my health.

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Great effective and Worth trying, You can get 5 to 20% DISC0UNT by entering the below life time PR0M0 C0DE for all iherb products

Posted by DISC0UN by enter YEN 1349 on January 8 2018 | Verified Purchase

Enter the C0DE above without space at Apply PR0M0 C0DE window, enjoy the 5 to 20% less in your whole cart. As this is lifetime PR0M0 C0DE, you can note down and use whenever you purchase from iherb in future!

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Re question about hypertension

Posted by iHerb Customer on November 4 2017 | Verified Purchase

Someone asked a question about the effect of this product if you have hypertension. I have hypertension and am on medication for it. I have suffered no adverse affects from taking this product.

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Five stars

Posted by iHerb Customer on October 16 2017 | Verified Purchase

The taste is not bad. Five stars. This is a reorder.

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Great form of Vitamin C

Posted by iHerb Customer on August 21 2017 | Verified Purchase

I love to use this in my post workout shake!

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