Thorne Research

Buffered C Powder

$29.00

SIZE: 236 Grams

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The Promise

Product identity & core formulation High‑potency buffered vitamin C powder with added minerals

Single‑ingredient vitamin C powder buffered with calcium, magnesium, and potassium to reduce acidity and improve tolerability.

Active ingredient

Vitamin C (ascorbic acid) provided as mineral ascorbates formed with calcium, magnesium, and potassium.

Potency & serving form

Powder format — one scoop (5.7 g) delivering 2.35 g (2350 mg) vitamin C per serving.

Buffered formulation

Ascorbic acid reacted with carbonate/bicarbonate minerals to create mineral ascorbates that neutralize acidity.

Quality & certification

NSF Certified for Sport®; no other ingredients or additives listed.

Why It Works

Why this formula matters Concrete formulation details you can verify

Specific amounts, mineral forms, and certification that define tolerance, electrolyte contribution, and purity.

01

Exact vitamin C amount

Provides 2.35 g vitamin C per scoop (listed as 2.35 g; 2,611% DV).

02

Mineral ascorbate species & amounts

Calcium as ascorbate (350 mg), magnesium as ascorbate (350 mg), potassium as ascorbate (99 mg) per serving.

03

Buffered chemistry

Ascorbic acid reacted with calcium carbonate, magnesium carbonate and potassium bicarbonate to form mineral ascorbates, reducing acidity compared with ascorbic acid alone.

04

Purity & ingredient list

No other ingredients declared; label lists only vitamin C and the reacting mineral carbonates/bicarbonates; NSF Certified for Sport®.

Reviews

Customer Reviews

Your Journey

How to use & safety Practical directions, storage, and cautions from the label

Clear serving instructions, measured scoop size, and labeled warnings to inform use.

Serving

Mix once daily

Mix 1 scoop (5.7 g) with at least 8 ounces of water daily or as recommended by your health‑care practitioner.

Package yield

Servings per container

One container provides 42 servings at 1 scoop each.

Warnings & precautions

Allergy and pregnancy guidance

Contraindicated with hypersensitivity to any ingredient. If pregnant, consult your health‑care practitioner before using.

Interactions & storage note

Known interactions and storage

Label lists no known adverse interactions or contraindications at publication date; store per package directions.

Product education

Buffered C Powder: A Gentle, High-Potency Vitamin C for Immune Support*

Thorne’s Buffered C Powder is a high-potency vitamin C supplement that is specifically buffered with essential minerals to be gentle on the digestive system. This formula combines pure ascorbic acid with calcium, magnesium, and potassium to create mineral ascorbates. This process neutralizes the acidity of the vitamin C, making it an ideal choice for individuals who experience stomach irritation from standard ascorbic acid. It’s a foundational supplement for supporting robust immune function and providing antioxidant protection.*

How It Works: The Buffered Advantage

While vitamin C is a crucial nutrient, its natural acidity can be a challenge for some. This formula is designed to deliver a potent dose without the digestive discomfort.

Gentle on the Stomach
By bonding ascorbic acid with mineral carbonates, this formula creates a buffered solution that is less acidic and well-tolerated. This allows individuals to take a higher, more therapeutic dose of vitamin C as needed to support their immune system, especially during times of seasonal challenge. The powder form also dissolves easily in water, creating a pleasant-tasting beverage.*

Enhanced with Essential Minerals
In addition to buffering the vitamin C, the minerals in this formula provide their own health benefits. Calcium, magnesium, and potassium are essential electrolytes that play vital roles in bone health, muscle function, and cardiovascular wellness. Therefore, this supplement provides both potent antioxidant support from vitamin C and the foundational benefits of key minerals.*

  • Provides a high-potency, buffered form of Vitamin C
  • Gentle on the stomach and less likely to cause digestive upset
  • Supports a robust and healthy immune response*
  • Enhanced with essential minerals calcium, magnesium, and potassium
  • NSF Certified for Sport®, trusted for purity and safety

Supplement record

Review serving details and ingredients for this product.

Supplement Facts:
Suggested Use: Mix 1 scoop with at least 8 ounces of water daily or as recommended by your health-care practitioner.
Serving Size: One Scoop (5.7 g)
Servings Per Container: 42
Ingredient Amount %DV
Vitamin C (as Ascorbic Acid) 2.35 g 2,611%
Calcium (as Ascorbate reacted from Calcium Carbonate and Ascorbic Acid) 350 mg 27%
Magnesium (as Ascorbate reacted from Magnesium Carbonate and Ascorbic Acid) 350 mg 83%
Potassium (as Ascorbate reacted from Potassium Bicarbonate and Ascorbic Acid) 99 mg 2%
Other ingredients: None
*Daily Value (DV) not established.
ALLERGY WARNING This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.
PREGNANCY If pregnant, consult your health-care practitioner before using this product.
INTERACTIONS There are no known adverse interactions or contraindications at publication date.