Buffered C Powder
Thorne
Buffered C Powder
4.6
★ ★ ★ ★ ★
(661 ratings)
Magnesium 350 mg
Calcium 350 mg
Potassium 99 mg
Score 92.0
Thorne Buffered C Powder is a premium supplement that delivers a substantial dose of Vitamin C in a buffered, well-tolerated form (ascorbates), along with beneficial amounts of essential minerals like magnesium, calcium, and potassium. Its high quality and synergistic ingredients support a wide range of health goals, particularly immune function, antioxidant protection, and bone/cardiovascular health.
Quantity: 8 Ounce(s)Servings size: 6 Gram(s) (42 servings)
Selected goals:
Other goals:
General Health
Energy
Stress Relief
Heart Health
Bone Health
leaderboard Score 92.0
Thorne Buffered C Powder is a premium supplement that delivers a substantial dose of Vitamin C in a buffered, well-tolerated form (ascorbates), along with beneficial amounts of essential minerals like magnesium, calcium, and potassium. Its high quality and synergistic ingredients support a wide range of health goals, particularly immune function, antioxidant protection, and bone/cardiovascular health.
insights Analysis
This product stands out due to its comprehensive approach to Vitamin C supplementation. By providing Vitamin C as mineral ascorbates (calcium, magnesium, potassium), it significantly reduces the acidity often associated with plain ascorbic acid, making it gentler on the stomach, a common concern cited in online reviews for high-dose Vitamin C. Thorne is a brand widely respected by nutritionists and healthcare professionals for its purity and quality, which contributes to its higher price point but also its trustworthiness. The combination of Vitamin C with these key electrolytes and bone minerals enhances its utility for various health goals, going beyond just immune support.
- Uses buffered forms of Vitamin C (ascorbates), which are gentler on sensitive stomachs and better tolerated at high doses.
- Provides synergistic minerals (Calcium, Magnesium, Potassium) alongside Vitamin C, supporting multiple body systems.
- Thorne is a highly reputable brand known for quality, purity, and rigorous testing, often recommended by health professionals.
- High dose of Vitamin C (2.35 grams) is effective for acute needs or therapeutic purposes.
- Higher price per serving compared to basic Vitamin C or individual mineral supplements.
- The overall mineral quantities, while beneficial, might not be sufficient to address severe deficiencies if used as a sole source for those specific minerals.
- Powder form requires mixing, which might be less convenient for some users than capsules.
- Individuals with kidney conditions or those on medications affecting potassium levels (e.g., ACE inhibitors) should consult a healthcare professional before taking potassium supplements.
- High doses of Vitamin C can still cause osmotic diarrhea or gastrointestinal discomfort in some sensitive individuals, even in buffered forms.
$24.30($0.57 per serving)
 iHerb | $ 24.30 | |
 Pure Formulas | $ 27.00 | |
 Vitacost | $ 27.00 | |
 Walmart | $ 27.00 |
bolt Effectiveness for goals
Magnesium plays a crucial role in muscle contraction and relaxation. Supplementing magnesium may help alleviate muscle cramps or spasms, particularly in individuals who are deficient in this mineral. Evidence suggests it can be effective for some populations, such as pregnant women or athletes experiencing cramps.
Calcium is essential for building and maintaining strong bones throughout life. Supplementation can support bone mineral density, especially in individuals with insufficient dietary intake, and may help reduce the risk of osteoporosis. Its effectiveness is often enhanced when combined with adequate vitamin D.
Magnesium contributes to the regulation of neurotransmitters involved in sleep, such as GABA. Some studies suggest that magnesium supplementation can improve sleep quality, particularly in individuals with magnesium deficiency or those experiencing restless sleep. Its calming effects on the nervous system may aid in relaxation.
Calcium supplements can help maintain bone density, particularly in individuals with insufficient dietary intake. Adequate calcium intake, combined with vitamin D, is crucial for bone health and may reduce the risk of osteoporosis.
Adequate potassium intake, often through diet, is associated with lower blood pressure and can help balance sodium levels. Potassium supplements may be effective in individuals with diagnosed low potassium levels or specific conditions, but should be used under guidance.
schedule Dosage, timing & forms
Calcium is often recommended in divided doses, ideally with meals to enhance absorption, especially for calcium carbonate. Magnesium can be taken any time, but some individuals find it calming when taken at night. Potassium supplements are typically taken with food to minimize potential stomach upset.
The Recommended Dietary Allowance (RDA) for adults is generally 1000-1200 mg for Calcium, 310-420 mg for Magnesium, and the Adequate Intake (AI) for Potassium is 2600-3400 mg. It is important to consider individual dietary intake. Supplemental doses, particularly for potassium, may be limited in over-the-counter products.
Taking these supplements with food is generally recommended. Calcium carbonate requires stomach acid for optimal absorption, which is produced during meals. Magnesium and potassium supplements are often taken with food to minimize potential digestive discomfort like stomach upset or nausea.
For adults, common supplemental calcium dosages range from 500-1000 mg, magnesium from 200-400 mg, and potassium from 99-300 mg due to regulatory limits on non-prescription supplements. These amounts are intended to complement dietary intake, not replace it entirely. Individual needs can vary, so consulting a healthcare professional for personalized advice is recommended.
Calcium carbonate is generally best absorbed when taken with food. Calcium citrate can be taken with or without food. To maximize absorption, it is often recommended to take calcium supplements in smaller doses, such as 500 mg at a time, throughout the day.
health_and_safety Safety & interactions
High calcium intake, primarily from supplements, can lead to hypercalcemia, which may cause symptoms like constipation, nausea, and an increased risk of kidney stones. Extremely high levels can also impair kidney function and interfere with the absorption of other essential minerals such as iron and zinc.
The kidneys play a critical role in regulating the balance of calcium, magnesium, and potassium in the body. Impaired kidney function can lead to an accumulation of these minerals, potentially causing serious health issues like hyperkalemia or hypermagnesemia. Individuals with kidney disease should only take these supplements under strict medical supervision.
Yes, individuals with kidney disease should exercise extreme caution with calcium, magnesium, and potassium supplements. Impaired kidney function can lead to an inability to excrete these minerals effectively, potentially causing dangerous build-ups. All supplementation should be done under strict medical supervision.
Excessive magnesium intake from supplements can lead to side effects such as diarrhea, nausea, and abdominal cramping. In very high doses, particularly for individuals with impaired kidney function, it can cause magnesium toxicity. This condition is characterized by symptoms like low blood pressure, muscle weakness, and irregular heartbeat.
Consuming excessive potassium, especially from supplements, can lead to hyperkalemia, a condition where blood potassium levels are too high. Symptoms can include muscle weakness, fatigue, and heart rhythm disturbances, which can be serious. Individuals with impaired kidney function are particularly at risk of hyperkalemia.
Ingredients
| Ingredient | Amount per serving |
|---|---|
Vitamin C | 2.35 Gram(s) |
Calcium | 350 mg |
Magnesium | 350 mg |
Potassium | 99 mg |
Categories
Magnesium 80.0
Offers a good dose (350mg) of magnesium in the highly bioavailable ascorbate form, which is effective for most general supplementation needs and contributes to muscle, nerve, and cardiovascular health.
Calcium 75.0
Provides a moderate dose (350mg) of calcium in the well-absorbed ascorbate form, which is beneficial for daily intake and bone health, but some individuals may need higher amounts or other forms if calcium deficiency is primary.
Potassium 60.0
Contains 99mg of potassium, which is a standard supplementary dose due to regulatory limits on potassium in supplements. While beneficial, this amount is relatively small compared to dietary intake requirements but serves to provide a foundational level of this essential electrolyte.
Goals
General Health 90.0
This product offers comprehensive general health support through its high-dose antioxidant Vitamin C, which boosts immunity and protects against cellular damage, combined with essential electrolytes vital for numerous bodily functions. Its buffered nature also makes it highly accessible for consistent daily use.
Heart Health 88.0
Magnesium and Potassium are vital electrolytes for maintaining normal heart rhythm, blood pressure, and overall cardiovascular function. Vitamin C also contributes to arterial health by supporting collagen in blood vessel walls and acting as an antioxidant, reducing oxidative stress on the cardiovascular system.
Bone Health 85.0
Contains both Calcium and Magnesium, essential minerals for bone structure and density. Additionally, Vitamin C is crucial for collagen synthesis, which forms the organic matrix of bones, providing a comprehensive approach to bone support beyond just mineral deposition.
Recommended Alternatives
72 Value 
Calcium (Carbonate Aspartate & Citrate) 500 mg
Swanson Premium Brand
4.8
★★★★★
(307 ratings)
This alternative offers a blend of calcium forms, including the more bioavailable aspartate and citrate, at an incredibly low price. It provides significantly better value by offering a diverse calcium source for a fraction of the cost.
75 Value 
600 + D3 plus Minerals
21st Century
4.8
★★★★★
(1551 ratings)
Provides Calcium and Magnesium, along with crucial Vitamin D3, at a remarkably low price per serving. This makes it a high-value option for general mineral and bone support, offering much more comprehensive benefits for a minimal cost.
70 Value 
Calcium Magnesium & Zinc
Sundown
4.7
★★★★★
(25011 ratings)
A cost-effective blend that includes Calcium, Magnesium, and Zinc, providing essential minerals for various bodily functions. While utilizing common forms, its broad spectrum and extremely low price offer substantially better value than the Thorne product.
85 Performance 
Raw Calcium
Garden of Life Vitamin Code
4.6
★★★★★
(4135 ratings)
This alternative offers a food-derived, algae-based calcium and magnesium, which is considered highly bioavailable and natural. It provides higher overall mineral quantities with a more holistic nutrient profile compared to the Thorne product.
88 Performance 
Bone Solid
Country Life
4.6
★★★★★
(725 ratings)
Features MCHA, an excellent natural source for comprehensive bone mineral support, combined with well-absorbed Magnesium Taurinate and Potassium Ascorbate, providing a superior and more complete mineral complex than the Thorne option.
90 Performance 
Magnesium Caps 500 mg
Life Extension
4.8
★★★★★
(71620 ratings)
This product contains TRAACS Magnesium Lysyl Glycinate Chelate, which is a highly regarded and superior form of magnesium known for its excellent absorption and reduced GI side effects, making it a better targeted magnesium supplement.
75 Budget 
Calcium 500 + D3
21st Century
4.8
★★★★★
(4030 ratings)
Offers essential calcium with D3 for optimal absorption at an incredibly low price per serving, making it a highly cost-effective choice for fundamental bone health support compared to the significantly more expensive Thorne product.
70 Budget 
Magnesium 250 mg
21st Century
4.7
★★★★★
(63969 ratings)
Provides a substantial dose of magnesium at an exceptionally low price, making it an extremely cost-effective option for individuals primarily seeking magnesium supplementation compared to the prohibitively expensive original.
68 Budget 
Potassium Gluconate 595 mg
21st Century
4.6
★★★★★
(17616 ratings)
Delivers potassium at a minimal cost per serving, offering a simple and very inexpensive option for basic potassium supplementation, far more economically viable than the Thorne product for this mineral.
72 Value
Calcium (Carbonate Aspartate & Citrate) 500 mg
Swanson Premium Brand
4.8
★★★★★
(307 ratings)
This alternative offers a blend of calcium forms, including the more bioavailable aspartate and citrate, at an incredibly low price. It provides significantly better value by offering a diverse calcium source for a fraction of the cost.
75 Value
600 + D3 plus Minerals
21st Century
4.8
★★★★★
(1551 ratings)
Provides Calcium and Magnesium, along with crucial Vitamin D3, at a remarkably low price per serving. This makes it a high-value option for general mineral and bone support, offering much more comprehensive benefits for a minimal cost.
70 Value
Calcium Magnesium & Zinc
Sundown
4.7
★★★★★
(25011 ratings)
A cost-effective blend that includes Calcium, Magnesium, and Zinc, providing essential minerals for various bodily functions. While utilizing common forms, its broad spectrum and extremely low price offer substantially better value than the Thorne product.
85 Performance
Raw Calcium
Garden of Life Vitamin Code
4.6
★★★★★
(4135 ratings)
This alternative offers a food-derived, algae-based calcium and magnesium, which is considered highly bioavailable and natural. It provides higher overall mineral quantities with a more holistic nutrient profile compared to the Thorne product.
88 Performance
Bone Solid
Country Life
4.6
★★★★★
(725 ratings)
Features MCHA, an excellent natural source for comprehensive bone mineral support, combined with well-absorbed Magnesium Taurinate and Potassium Ascorbate, providing a superior and more complete mineral complex than the Thorne option.
90 Performance
Magnesium Caps 500 mg
Life Extension
4.8
★★★★★
(71620 ratings)
This product contains TRAACS Magnesium Lysyl Glycinate Chelate, which is a highly regarded and superior form of magnesium known for its excellent absorption and reduced GI side effects, making it a better targeted magnesium supplement.