THORNE - Buffered C Powder - Vitamin C (Ascorbic Acid) with Calcium Magnesium and Potassium - 8.47 Oz
ThorneAnalysis updated October 2026 · How Scout scores
At a glance
Summary
This supplement features high-quality, bioavailable forms of essential nutrients such as Vitamin C, Calcium, Magnesium, and Potassium. The ascorbate forms enhance absorption and provide additional antioxidant benefits, making it a well-formulated product. The absence of artificial additives, sweeteners, or harmful ingredients contributes to its excellent rating.
Key ingredients 4
Vitamin CVery Good
Vitamin C is an essential nutrient known for its antioxidant properties and immune support. It is crucial for the synthesis of collagen, absorption of iron, and maintenance of cartilage, bones, and teeth. Ascorbic acid is a pure form of Vitamin C, ensuring high bioavailability.
Benefits
Supports immune function, acts as a powerful antioxidant, and aids in collagen synthesis.
CalciumVery Good
Calcium is vital for maintaining strong bones and teeth, and it plays a role in muscle function and nerve signaling. The ascorbate form enhances absorption and provides additional Vitamin C benefits. This form is less likely to cause digestive discomfort compared to other calcium salts.
Risks
Excessive intake may lead to kidney stones or impaired absorption of other minerals.
Benefits
Essential for bone health and muscle function, with enhanced absorption due to ascorbate form.
PotassiumVery Good
Potassium is essential for maintaining proper heart and muscle function and fluid balance. The ascorbate form aids in absorption and provides additional Vitamin C benefits. It helps regulate blood pressure and supports cardiovascular health.
Risks
Excessive intake can lead to hyperkalemia, which may affect heart function.
Benefits
Crucial for heart health, fluid balance, and muscle function, with enhanced absorption due to ascorbate form.
MagnesiumGood
Magnesium is crucial for over 300 enzymatic reactions in the body, including energy production and protein synthesis. The ascorbate form improves absorption and provides additional antioxidant benefits. It also supports muscle and nerve function, and helps regulate blood pressure.
Risks
High doses may cause diarrhea or gastrointestinal discomfort.
Benefits
Supports energy production, muscle function, and has a calming effect on the nervous system.
Processing
Unprocessed or Minimally Processed Foods
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