Source Naturals Calcium Ascorbate supplement bottle
Source Naturals

Calcium Ascorbate

What We Researched
4 active ingredients analyzed · 1 brand certification checked · 1 retailer compared · Last updated: Mar 2026
67
Product Score Fair
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 3 g 1%
Vitamin C (as Calcium Ascorbate) 2200 mg 3667%
Calcium (as Calcium Ascorbate) 243 mg 24%
Bioavailability Very Good

Absorption Rating

  • Total Carbohydrates Fair
  • Vitamin C (as Calcium Ascorbate) Good
  • Calcium (as Calcium Ascorbate) Good
Other Ingredients Fair

Fillers & Additives

No inactive ingredient data available.

Efficacy Poor

Dosage Analysis

  • Vitamin C (as Calcium Ascorbate) 2200 mg High
  • Calcium (as Calcium Ascorbate) 243 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 10 kcal
Total Carbohydrates 3 g 1%
Vitamin C (as Calcium Ascorbate) 2200 mg 3667%
Calcium (as Calcium Ascorbate) 243 mg 24%

Price Comparison

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Source Naturals

Founded 1982 · Scotts Valley, CA, USA · 837 products · sourcenaturals.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source
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Frequently Asked Questions
Is Source Naturals Calcium Ascorbate a good supplement?

Source Naturals Calcium Ascorbate received a product quality score of 67/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 4 active ingredients with 42 servings per container. The manufacturer, Source Naturals, holds a brand trust score of 66/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Source Naturals Calcium Ascorbate?

Source Naturals Calcium Ascorbate contains 4 active ingredients: Calories (10 kcal), Total Carbohydrates (3 g), Vitamin C (as Calcium Ascorbate) (2200 mg), Calcium (as Calcium Ascorbate) (243 mg). Notable high-dose ingredients include Vitamin C at 3667% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Source Naturals Calcium Ascorbate safe to take?

Source Naturals Calcium Ascorbate has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Source Naturals a trustworthy supplement brand?

Source Naturals receives a brand trust score of 66/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1982 and headquartered in Scotts Valley, CA, USA, the company offers 837 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

What is magnesium good for?

Magnesium Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding magnesium good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

How much magnesium per day?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What is zinc good for?

Zinc Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding zinc good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.