Calcium Ascorbate

Safe MineralSynthetic

Calcium Ascorbate is a synthetic mineral used in dietary supplements. Safety rating: Safe. It is widely considered safe at typical supplement doses. Found in 20 supplements in the GoodSupp database. A form of vitamin C that is buffered with calcium.

20 Products use this
Safe Safety rating
Mineral Category
No Natural origin

Safety Verdict: Safe

This ingredient is rated safe for use in dietary supplements.

What is Calcium Ascorbate?

A form of vitamin C that is buffered with calcium.

Common Names Calcium Ascorbate, Ester-C
Type Mineral
Origin Synthetic / Manufactured
Safety Rating Safe

Why is Calcium Ascorbate used in supplements?

It is added to supplements as a source of vitamin C and calcium.

Role in supplements: Mineral compound — provides a specific mineral in a bioavailable form the body can absorb.

Should you be concerned about Calcium Ascorbate?

No. Calcium Ascorbate is widely regarded as safe for use in dietary supplements at typical levels. It has a long history of use and is accepted by major regulatory bodies.

No action needed. This ingredient is safe at amounts used in supplements.

Top-rated products containing Calcium Ascorbate

These 20 highest-scoring supplements in our database use Calcium Ascorbate.

Jarrow Formulas Vegan BroccoMax, 60 Veggie Capsules (17.50 mg per Capsule)
Jarrow Formulas Vegan BroccoMax, 60 Veggie Capsules (17.50 mg per Capsule)
Product 87 Brand N/A
BIOTICS RESEARCH NutriClear Chocolate
BIOTICS RESEARCH NutriClear Chocolate
Product 82 Brand N/A
One-A-Day Prenatal 1 with Folic Acid, DHA & Iron, Multivitamin/Multimineral Supplement, 30 Softgels
One-A-Day Prenatal 1 with Folic Acid, DHA & Iron, Multivitamin/Multimineral Supplement, 30 Softgels
Product 81 Brand N/A
One-A-Day Prenatal Advanced, Complete Multivitamin with Brain Support, 60 Prenatal Multivitamin Softgels & 60 Prenatal Choline Tablets
One-A-Day Prenatal Advanced, Complete Multivitamin with Brain Support, 60 Prenatal Multivitamin Softgels & 60 Prenatal Choline Tablets
Product 81 Brand N/A
Carlson Mild-C Vitamin C Crystals, 2.2 lbs
Carlson Mild-C Vitamin C Crystals, 2.2 lbs
Product 81 Brand N/A
The Vitamin Shoppe Opti-Vue with FloraGLO Lutein
The Vitamin Shoppe Opti-Vue with FloraGLO Lutein
Product 81 Brand N/A
One-A-Day Prenatal 1 with Folic Acid, DHA & Iron, 60 Softgels
One-A-Day Prenatal 1 with Folic Acid, DHA & Iron, 60 Softgels
Product 81 Brand N/A
The Vitamin Shoppe Opti-Vue with FloraGLO Lutein, 120 Capsules
The Vitamin Shoppe Opti-Vue with FloraGLO Lutein, 120 Capsules
Product 80 Brand N/A
Nature's Truth Premium Liquid Collagen with Biotin, Delicious Berry, 8 fl oz (237 ml)
Nature's Truth Premium Liquid Collagen with Biotin, Delicious Berry, 8 fl oz (237 ml)
Product 80 Brand N/A
iHerb Exclusive Shaker Cup, 7 Piece Set
iHerb Exclusive Shaker Cup, 7 Piece Set
Product 76 Brand N/A
Zipfizz Energy Drink Mix, Orange Soda, 20 Tubes, 0.39 oz (11 g) Each
Zipfizz Energy Drink Mix, Orange Soda, 20 Tubes, 0.39 oz (11 g) Each
Product 75 Brand N/A
Zipfizz Energy Drink Mix, Fruit Punch, 20 Tubes, 0.39 oz (11 g) Each
Zipfizz Energy Drink Mix, Fruit Punch, 20 Tubes, 0.39 oz (11 g) Each
Product 74 Brand N/A
Zipfizz Energy Drink Mix, Blueberry Raspberry, 20 Tubes, 0.39 oz (11 g) Each
Zipfizz Energy Drink Mix, Blueberry Raspberry, 20 Tubes, 0.39 oz (11 g) Each
Product 74 Brand N/A
Zipfizz Energy Drink Mix, Black Cherry, 20 Tubes, 0.39 oz (11 g) Each
Zipfizz Energy Drink Mix, Black Cherry, 20 Tubes, 0.39 oz (11 g) Each
Product 74 Brand N/A
Zipfizz Energy Drink Mix, Orange Cream, 20 Tubes, 0.39 oz (11 g) Each
Zipfizz Energy Drink Mix, Orange Cream, 20 Tubes, 0.39 oz (11 g) Each
Product 74 Brand N/A
Ultima Replenisher 6 Essential Electrolytes, Daily Electrolyte Drink Mix, Raspberry, 10 Stickpacks, 0.11 oz (3.2 g) Each
Ultima Replenisher 6 Essential Electrolytes, Daily Electrolyte Drink Mix, Raspberry, 10 Stickpacks, 0.11 oz (3.2 g) Each
Product 74 Brand N/A
Ultima Replenisher 6 Essential Electrolytes, Daily Electrolyte Drink Mix, Original Variety Pack, 20 Stickpacks, 2.5 oz (70 g)
Ultima Replenisher 6 Essential Electrolytes, Daily Electrolyte Drink Mix, Original Variety Pack, 20 Stickpacks, 2.5 oz (70 g)
Product 73 Brand N/A
Ultima Replenisher 6 Essential Electrolytes, Daily Electrolyte Drink Mix, Original Variety Pack, 20 Stickpacks, 2.5 oz (70 g)
Ultima Replenisher 6 Essential Electrolytes, Daily Electrolyte Drink Mix, Original Variety Pack, 20 Stickpacks, 2.5 oz (70 g)
Product 73 Brand N/A
Ultima Replenisher 6 Essential Electrolytes, Daily Electrolyte Drink Mix, Original Variety Pack, 20 Stickpacks, 2.5 oz (70 g)
Ultima Replenisher 6 Essential Electrolytes, Daily Electrolyte Drink Mix, Original Variety Pack, 20 Stickpacks, 2.5 oz (70 g)
Product 73 Brand N/A
Ultima Replenisher 6 Essential Electrolytes, Daily Electrolyte Drink Mix, Original Variety Pack, 20 Stickpacks, 2.5 oz (70 g)
Ultima Replenisher 6 Essential Electrolytes, Daily Electrolyte Drink Mix, Original Variety Pack, 20 Stickpacks, 2.5 oz (70 g)
Product 73 Brand N/A
Related Ingredients
Frequently Asked Questions
Is Calcium Ascorbate safe in supplements?

Yes. Calcium Ascorbate is rated safe for use in dietary supplements at typical levels. This rating is based on regulatory assessments, published safety research, and its long history of use in the supplement industry. It is widely accepted by major regulatory bodies including the FDA and EFSA. In GoodSupp's database, 20 products contain this ingredient. Consult your healthcare provider if you have specific concerns.

What is Calcium Ascorbate and why is it in my supplement?

A form of vitamin C that is buffered with calcium. It appears in 20 products in the GoodSupp database.

Is Calcium Ascorbate natural or synthetic?

Calcium Ascorbate is synthetically produced, meaning it is manufactured through chemical processes rather than directly extracted from natural sources. Synthetic ingredients are extremely common in supplements and are not inherently less safe than natural alternatives. In many cases, synthetic production allows for higher purity and more consistent quality. The FDA regulates both natural and synthetic supplement ingredients under the same safety standards. GoodSupp rates ingredients based on their actual safety data regardless of whether they're natural or synthetic.

Is calcium ascorbate bad for you?

This is one of the most common questions in the supplement space, and the answer depends on several factors: the specific product's formulation, ingredient quality, manufacturing standards, and your individual health profile. Quality supplements from reputable brands with third-party testing certifications are generally safe when taken as directed. However, the supplement industry's self-regulated nature means quality varies enormously between products. Key safety factors to check: third-party testing (NSF, USP), transparent labeling with full dose disclosure, GMP-certified manufacturing, and a clean brand record with no FDA warnings. GoodSupp's product scanner checks all of these factors and provides instant safety assessments for over 250,000 supplement products.

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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.