C-500 Calcium Ascorbate-C by NOW delivers 500 mg of buffered, non-acidic Vitamin C per capsule — formulated as Calcium Ascorbate for enhanced gastrointestinal tolerability and optimized cellular absorption compared to standard ascorbic acid.
Key Benefits of Calcium Ascorbate (Buffered Vitamin C)
- Antioxidant Cell Protection — Vitamin C as Calcium Ascorbate helps neutralize free radicals, supporting the protection of cellular structures from oxidative stress and environmental damage.
- Immune System Support — Vitamin C maintains the body's natural immune defenses, supporting white blood cell production and overall immune system function.
- Collagen Synthesis Support — Vitamin C is an essential cofactor in the body's production of collagen, the structural protein that maintains the integrity of skin, joints, and connective tissue.
- Bone & Dental Health Maintenance — The Calcium Ascorbate form delivers 55 mg of elemental calcium per serving, contributing to the maintenance of strong bones and teeth alongside Vitamin C's role in connective tissue support.
- Amino Acid Metabolism Support — Vitamin C plays a functional role in healthy amino acid metabolism, supporting the body's ability to synthesize and utilize key proteins.
- Citrus Bioflavonoid Enhancement — Each capsule includes 10 mg of Citrus Bioflavonoids (37% Hesperidin), which work synergistically with Vitamin C to support vascular integrity and antioxidant activity.
- GI-Friendly Formulation — The buffered, non-acidic nature of Calcium Ascorbate makes this form well-suited for individuals with sensitive digestive systems who may not tolerate standard ascorbic acid.
Standard Vitamin C (ascorbic acid) is inherently acidic and can cause gastrointestinal discomfort at higher doses — particularly for individuals with sensitive digestive systems. Calcium Ascorbate is a pH-neutral, buffered form of Vitamin C that delivers the same antioxidant and immune-supportive benefits with significantly improved tolerability. The addition of Citrus Bioflavonoids, specifically Hesperidin, further supports Vitamin C's bioavailability and extends its antioxidant activity, reflecting a clinically informed approach to Vitamin C supplementation.
Dietary & Quality Standards
- Gluten-Free — Contains no wheat or gluten
- Free of Common Allergens — No soy, milk, egg, shellfish, yeast, starch, or sugar
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Kosher & Halal — Certified to meet specific dietary and preparation requirements
- No Preservatives — Clean-label formulation with no artificial additives
- Vegetable-Sourced Magnesium Stearate — No animal-derived processing aids
- cGMP Manufactured — Produced by NOW Foods under current Good Manufacturing Practices
- Non-Heat Sensitive — Standard storage conditions apply; no refrigeration required
Frequently Asked Questions
What is Calcium Ascorbate and how does it differ from regular Vitamin C?
Calcium Ascorbate is a buffered, non-acidic form of Vitamin C created by combining ascorbic acid with calcium. This neutralizes the acidity of standard Vitamin C, making it gentler on the stomach while delivering the same antioxidant and immune-supportive benefits — an important distinction for individuals with acid sensitivity or GI concerns.
How much Vitamin C and Calcium does each capsule provide?
Each capsule delivers 500 mg of Vitamin C and 55 mg of elemental Calcium from the Calcium Ascorbate compound. At the maximum suggested serving of 3 capsules daily, this provides 1,500 mg of Vitamin C and 165 mg of Calcium.
Hesperidin is a citrus bioflavonoid with antioxidant properties that complements Vitamin C's activity at the cellular level. Research suggests bioflavonoids like Hesperidin may support vascular integrity and enhance the tissue retention of Vitamin C.
Who is this product best suited for?
C-500 Calcium Ascorbate-C is particularly well-suited for individuals who require daily Vitamin C supplementation but experience digestive sensitivity with standard ascorbic acid formulations. It is also appropriate for those seeking a moderate-dose Vitamin C option with flexible dosing (1–3 capsules daily).
Is this product suitable for vegans or vegetarians?
Yes — Encapsulated in plant-derived veg capsules, suitable for various dietary lifestyles.
What is the suggested use and serving flexibility?
The recommended serving is 1 capsule, taken 1 to 3 times daily, preferably with meals. This flexible dosing structure allows individuals to adjust their Vitamin C intake based on personal wellness needs and practitioner guidance.
How should this product be stored?
Store in a cool, dry place away from direct sunlight and humidity. No refrigeration is required for this formulation.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
Supplement Facts
Serving Size: 1 Veg Capsule
Servings Per Container: 100/250
Amount per Serving % Daily Value
Vitamin C (from Calcium Ascorbate)
500 mg 556%
Calcium (from Calcium Ascorbate)
55 mg 4%
Citrus Bioflavonoid Complex
10 mg †
†Daily Value not established.
Other Ingredients: Hypromellose (cellulose capsule), Microcrystalline Cellulose and Stearic Acid (vegetable source).
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Caution: For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children.
Store in a cool, dry place after opening.
Natural color variation may occur in this product.
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.
