Calcium Ascorbate®
Single Vitamin & MineralBrand: Source Naturals
Functions
Net Contents
4 Oz(s)
Serving Size
1.35–2.7 Gram(s)
Servings Per Container
42
Supplement Form
Powder
Bar Code (UPC/SKU)
0 21078 00447 9
Product Version
SN0447 REV C181
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
4 distinct active ingredients are disclosed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
3 ingredients report a %DV; 1 meet or exceed 100% DV.
Label states: Vegetarian, Gluten-Free.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Allergen Guide
Contains
- Milk
- Egg
- Wheat
- Soy
- Gluten
Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.
Supplement Facts
Serving Size: 1.35–2.7 Gram(s) · 1– per day
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Calories | 10 Calorie(s) | — |
| Total Carbohydrates | 3 Gram(s) | 1% |
| Vitamin C(Calcium Ascorbate) | 2200 mg | 3667% |
| Calcium(Calcium Ascorbate) | 243 mg | 24% |
Percent Daily Values (%DV) are based on a 2,000 calorie diet.
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
Suggested Use: A rounded 1/4 to 1/2 teaspoon mixed in water or juice as desired, preferably with a meal.
Warnings & Precautions
Precautions re: Pregnant or Nursing or Prescription Medications
Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.
Precautions re: All Other
Do not use if either tamper-evident seal is broken or missing.
Precautions re: Children
Keep out of the reach of children.
Storage
Storage
Keep dry, away from heat and direct sunlight. Always replace cap. Do not refrigerate.
Formulation
Formula re: Contains
Vitamin C crystals
Formulation re: Other
Supports immune system
Formula re: Contains
Calcium ascorbate is non-acidic (pH neutral), making it gentle on the digestive system. Vitamin C plays a vital role in the formation of collagen (a structural protein in connective tissue), amino acid metabolism and hormone synthesis, and the utilization of many nutrients, such as folic acid and iron. It is also a key factor in the body's immune system.
Formulation re: Vegetarian/Vegan
Suitable for vegetarians.
Formulation re: Does NOT Contain
Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
FDA Statements
FDA Statement of Identity
Dietary Supplement
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Manufacturer & Distributor
Distributor
Source Naturals, Inc.
P. O. Box 2118, Santa Cruz, CA, 95062
Market Reference
Calcium Ascorbate Crystals Source Naturals
Herbs Direct4.7(3)$8.84Source Naturals Calcium Ascorbate Crystals
Herbs Direct4.8(5)$16.37Source Naturals Calcium 200mg Tablet
iHerb4.8(1200)$18.46Source Naturals Ultimate Ascorbate C
Vitacost.com4.8(68)$15.11Magnesium Ascorbate Source Naturals
Walmart - Health Chest4.8(166)$15.90Source Naturals Sodium Ascorbate Crystals 8 oz
Swanson Health Products4.7(62)$13.59Source Naturals CCM Calcium 300 mg 120 Tablets
Vitacost.com4.8(341)$12.73Source Naturals Wellness Formula
The Healthy Place4.7(2200)$35.69
Where to Buy Locally
Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.
Showing representative supplement & health retailers — search above for stores in your area.
Holland & Barrett - Victoria Street
4.2 (60)Vitamin & Supplements Shop
86 Victoria St, London SW1E 5JL
ITL Health
5.0 (37)Vitamin & Supplements Shop
50 Broadway, London SW1H 0BL
Aphro-D
4.9 (82)Vitamin & Supplements Shop
27 Old Gloucester St, London WC1N 3AF
Protiv Nutrition
5.0 (1)Vitamin & Supplements Shop
3rd Floor, 207 Regent St., London W1B 3HH
RightNutri
4.9 (78)Vitamin & Supplements Shop
26 Queenstown Rd, London SW8 3RX
Arbor Vitamins
5.0 (13)Vitamin & Supplements Shop
128 City Rd, London EC1V 2NX
Nutrapad Ltd –Pharmacy-friendly, Hydration, Immunity & Wellness Support - oxford street
5.0 (4)Vitamin & Supplements Shop
41 Bloomsbury Way, London WC1A 2SA
Nayble Health & Sports
5.0 (139)Vitamin & Supplements Shop
18 Chamberlayne Rd, London NW10 3JD
Research & Studies
Biological significance of ascorbic acid (vitamin C) in human health-a review
K Iqbal, A Khan, MMAK Khattak - Pakistan Journal of Nutrition, 2004 - pjnonline.org
… Both the densities of bones and level of vitamin C begin to decrease with age, VVhile a … a person's vitamin C status is also related to the maintenance of healthy bones. In fact, vitamin C …
2004476 citationsFact sheet for health professionals
D Vitamin - Natl. Institutes Heal. Off. Diet. Suppl. Available …, 2017 - samanpharmed.com
… Other forms of vitamin C supplements include sodium ascorbate; calcium … In male physicians participating in the Physicians’ Health Study, use of vitamin C supplements for a mean of …
2017119 citationsNatural antioxidants: function and sources
Y Shebis, D Iluz, Y Kinel-Tahan, Z Dubinsky… - Food and Nutrition …, 2013 - academia.edu
… Supplements The most common antioxidants given as food supplements are vitamins C (aka ascorbic acid and ascorbate) and E. Vitamin C is a cofactor in enzymatic reactions, in…
2013312 citationsScientific Opinion on the re‐evaluation of ascorbic acid (E 300), sodium ascorbate (E 301) and calcium ascorbate (E 302) as food additives
… additives and Nutrient Sources added to Food … - Efsa …, 2015 - Wiley Online Library
… ascorbic acid, sodium ascorbate or calcium ascorbate. Long-term carcinogenicity tests with ascorbic … combined exposure to ascorbic acid (E 300), calcium ascorbate (E 301) and sodium …
201525 citationsComparative effectiveness of ascorbic acid vs. calcium ascorbate ingestion on pharmacokinetic profiles and immune biomarkers in healthy adults: A …
B Dickerson, DE Gonzalez, R Sowinski, D Xing… - Nutrients, 2024 - mdpi.com
… displayed augmented intracellular vitamin C concentrations in the leukocytes at 24 h after acute supplementation with 1000 mg calcium ascorbate (CA), compared to ascorbic acid (AA). …
20241 citationsEnhanced Vitamin C delivery: A systematic literature review assessing the efficacy and safety of alternative supplement forms in healthy adults
PC Calder, RB Kreider, DL McKay - Nutrients, 2025 - mdpi.com
… lipid metabolites than with Calcium ascorbate EC, calcium ascorbate, and ascorbic … Calcium ascorbate EC on immune parameters, and one found an association of Calcium ascorbate …
202520 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2019-12-22. DSLD Label ID: 211846. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.
Related Products

100% Natural E-400 IU With Selenium 50 mcg
Vitamin World

600+D
Caltrate

600+D
Caltrate

600+D3
21st Century