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Now Foods, Calcium Ascorbate, 100% Pure Buffered Vitamin C Powder, 8 oz (227 g)

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In Stock
  • Expiration Date: Apr 2019
  • Shipping Weight: 0.71 lbs (0.32 kg)
  • Product Code: NOW-00752
  • UPC Code: 733739007520
  • Package Quantity: 8 oz (227 g)
  • Dimensions: 2.7 x 2.7 x 4.7 in, 0.6 lbs (0.27 kg)
Product Overview


  • Antioxidant Protection
  • GMP Quality Assured
  • A Dietary Supplement
  • Vegetarian Product

Calcium Ascorbate is an optimal nutritional supplement that combines Ascorbic Acid (Vitamin C) with Calcium Carbonate. By combining these two dietary ingredients, we have created a buffered source of Vitamin C that will not contribute to gastric irritation in sensitive persons.

Suggested Use

As a dietary supplement, take 1/4 level teaspoon one to three times daily. Consider taking this product in combination with NOW Bioflavonoids, Alpha Lipoic Acid and Enzogenol.

Other Ingredients


Contains no sugar, salt, starch, yeast, wheat, gluten, soy, milk, egg, shellfish or preservatives.

Vegetarian/vegan product


This product is sold by weight not volume.

Store in a cool, dry place.

Supplement Facts
Serving Size: 1/4 Level Teaspoon (1.12 g)
Servings per Container: 202
  Amount Per Serving % Daily Value
Vitamin C (from Calcium Ascorbate) 890 mg 1483%
Calcium (from Calcium Ascorbate) 100 mg 10%
iHerb Customer Reviews
► All is Good BUT This is NOT a Non-GMO Vitamin C Product !
This Calcium Ascorbate product offered by Now Foods combines Ascorbic Acid (Vitamin C) with Calcium Carbonate. Calcium Ascorbate is a form of Vitamin C which is much more readily absorbed in the blood stream than the other forms of calcium. Importantly, Calcium is coupled with Vitamin C to deliver the benefits of both Calcium & Vitamin C. All is good with this Vitamin C product except it is NOT a Non-GMO product. It means, this is a Genetically Modified Organism (GMO) product. If you take a Vitamin C supplement with Ascorbic Acid and you guessed it, you are likely consuming a supplement with GMO origins, unless the corn was certified organic. The main source for Ascorbic Acid or Vitamin C is corn which extensively corrupt material made by Monsanto and others. In fact, 98% of corn crops are GMO tainted. Regarding the taste, with the pH level in the range of 7 to 7.5, it's pH neutral, very gentle to stomach and basically almost tasteless when mixed in water with no sweetener/flavouring ingredient added. This product is suitable for those who are sensitive to strong acidic or have gastric irritation. However, if you are looking for something Non-GMO Vitamin C product, this will not suit you. I am a strong advocate on scientific medical research and evidence-based information, and constantly want to differentiate between marketing hyperbole and real world effects. I hope you'll find my review Helpful to you. Best wishes and good health to everyone!
Nov 29, 2013

excellent product

Posted by 5548825682825323713 on Dec 24, 2015

Earlier I used ascorbic acid which was acidic and had caused me intestinal cramps. now this product is really nice and i could even consume large doses without any issue.

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Great product!!!

Posted by 4993264536880984329 on Jan 26, 2015

I like Calcium Ascorbate very much. I am using it every night before bedtime and during the day when I feel under weather:-) It's very easy on stomach and it is very powefull for immune system.

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non offensive taste

Posted by Reviewer2355564 on Nov 12, 2014

This is the form of Vitamin C that I am able to add to my cats' raw food diet since it is not sour. I have two males, one of which has had Struvite crystals which he had surgery for. I add a pinch of Calcium Ascorbate to their food to help keep their urinary pH down.

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Very sour still

Posted by Reviewer2144409 on Jun 11, 2014

It is a great deal but my husband says it is still sour.

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Great product

Posted by AReviewer on Mar 27, 2014

I love this buffered C to ward off colds. I always have some in my cabinet so that I can begin taking it if needed!

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