Buffered Vitamin C Powder | Thorne® | 231 grams (8.32 oz)



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Vitamin C (Ascorbic Acid)

With Calcium, Magnesium, and Potassium

Vitamin C (ascorbic acid) is a key antioxidant, protecting cells throughout the body from free radical damage.* It also plays an integral role in the production of cellular energy, in addition to helping to maintain healthy cholesterol levels, preventing LDL oxidation, promoting wound healing, and maintaining healthy immune function.* Taking a high amount of vitamin C – several grams daily – has been advocated for optimizing both immune function and antioxidant support.* But taking a high amount can be a challenge for individuals who have a sensitive or compromised digestive system. Thorne's Buffered C Powder supplies not just vitamin C, but also calcium, magnesium, and potassium mineral-ascorbates that serve as a buffer, which allows sensitive individuals to take a larger amount of vitamin C with ease and comfort.


  • Easy To Take: The easiest way to take a higher amount of vitamin C
  • Easy On The Stomach: A buffered vitamin C supplement for individuals with a sensitive or compromised digestive system
  • Immune: For immune function and antioxidant support*
  • Collagen/Bones: Helps maintain healthy bones and connective tissue*
  • NPN 80018330

Key Ingredients

Calcium, Vitamin C, Magnesium, Potassium


Serving Size: 1 Scoops
Servings Per Container: 42
Name Amount
Calcium (Ascorbate) 350mg
Magnesium (Ascorbate) 350mg
Potassium (Ascorbate) 99mg
Vitamin C (Ascorbic Acid) 2.35g

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 the two-time Nobel Prize winner, Linus Pauling, PhD. The lifestyle and health factors that dictate a need for higher vitamin C intake include smoking, alcohol ingestion, stress, diabetes, pregnancy, environmental toxicity, and the use of certain drugs.

How to Use

Mix 1 scoop with at least 8 ounces of water once daily or as recommended by your health professional. 


This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.


If pregnant, consult your health professional before using this product.


There are no known interactions or contraindications at publication date.


Vitamin C can cause diarrhea in some individuals in large doses, which can vary from person to person. This resolves when the dosage is reduced.

Legal Disclaimer

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

The product information on this website may not be 100% accurate. Please ensure to check the product packaging information before consumption, especially if you have allergies or other health conditions.

Buffered C Powder makes it easier for individuals with a sensitive or compromised digestive system to take a higher amount of vitamin C. It also provides calcium, magnesium, and potassium.

Legal Disclaimer

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