Ester-C 24 Hour Immune Support 1000 mg®
Other CombinationsBrand: NatureSmart
Functions
Net Contents
120 Vegetarian Coated Tablet(s)
Serving Size
1 Tablet(s)
Servings Per Container
Not specified
Supplement Form
Tablet or Pill
Bar Code (UPC/SKU)
0 25077 16982 5
Product Version
Prod No. 56027 01B B16980 FAE
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
3 distinct active ingredients are disclosed in Supplement Facts.
Label includes a proprietary blend, so some individual amounts are not itemized.
2 ingredients report a %DV; 1 meet or exceed 100% DV.
Label states: Vegetarian, Non-GMO, 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
Free From
- Milk
- Fish
- 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 Tablet(s) · 1 per day
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Vitamin C(Ester-C Calcium Ascorbate) | 1000 mg | 1667% |
| Calcium(Ester-C Calcium Ascorbate) | 110 mg | 11% |
| C-Sorb Citrus Bioflavonoid Complex | 102 mg | — |
| Citrus Bioflavonoid Complex(Citrus spp.) | — | — |
| sweet Orange | — | — |
| Tangerine | — | — |
| Lime | — | — |
| Lemon | — | — |
| Acerola extract | — | — |
| Rutin | — | — |
| Hesperidin Complex(Citrus spp.) | — | — |
| naturally occurring Vitamin C Metabolites | — | — |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
Directions: For adults, take one (1) tablet daily, preferably with a meal.
Suggested/Recommended/Usage/Directions
1 Per day
Warnings & Precautions
Precautions re: Pregnant or Nursing or Prescription Medications
Warning: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.
Precautions re: All Other
Discontinue use and consult your doctor if any adverse reactions occur.
Precautions re: Children
Keep out of reach of children.
Precautions re: All Other
Do not use if seal under cap is broken or missing.
Storage
Storage
Store at room temperature.
Formulation
Formulation re: Does NOT Contain
Plus, Ester-C is manufactured without chemicals to neutralize pH, which means it’s non-acidic and gentle on your stomach.
Formulation re: Does NOT Contain
Non-GMO
Formulation re: Does NOT Contain
Non-gmo. No gluten, no wheat, no milk, no lactose, no artificial color, flavor or sweetener, no preservatives, no sugar, no starch, no soy, no yeast, no fish. Sodium free.
Formulation re: Vegetarian/Vegan
Suitable for Vegetarians.
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.
Other Label Statements
General Statements: All Other Content
Patented immune health formula
General Statements: All Other Content
Maximum strength Stomach friendly!
General Statements: All Other Content
Ester-C is the patented immune health formula that stays in your system for 24 hours – so you have the kind of support you can count on 24/7. Ester-C is carefully formulated to contain naturally occurring metabolites. Metabolites are substance derived from other compounds (such as nutrients) during the process of metabolism. The metabolites in Ester-C help enhance the retention of Vitamin C by your white blood cells, which are a vital component of your immune system. So once you take your daily dose of Ester-C, it gets into your white blood cells, and stays there – for up to 24 hours, clinically studied to last longer than regular Vitamin C.
Brand IP Statement(s) re: (c), (TM), (SM)
Patented Ester-C delivers 24-hour immune and antioxidant support you can trust.
General: Product/Version Code
PROD No. 56027 01B B16980 FAE
General Statements: All Other Content
Ester-C has been clinically studied to stay in the white blood cells for up to 24 hours, which is longer than regular Vitamin C. White blood cells are an important component of the immune system
Brand IP Statement(s) re: (c), (TM), (SM)
Ester-C and Ester-C are registered trademarks of The Ester C Company. U.S. Patent Nos. 6,878,744 and 6,197,813.
Brand IP Statement(s) re: (c), (TM), (SM)
2015 NatureSmart, LLC
General Statements: All Other Content
Call toll free 1-866-417-0739 with questions or comments, Mon.-Sat., 9am-7pm EST. www.Ester-C.com
Seals/Symbols
Made in the USA with select ingredients from around the world
General Statements: All Other Content
Clinically studied to last longer than regular Vitamin C
Manufacturer & Distributor
Manufacturer
NatureSmart, LLC
Bohemia, NY, 11716, USA
Market Reference
Ester-C 1000mg Tablets 60 Count
Target4.7(158)$15.99Ester C Vitamin C
Target4.8(2500)$19.99Nature's Bounty 1000mg Ester-C Softgels
Walmart4.5(2100)$9.97American Health Ester C With Citrus Bioflavonoids
Natures Food Markets4.9(6200)$22.49Solgar Ester-C Plus 1000 mg Vitamin C
Natures Food Markets4.8(4700)$11.89Nature Made 1000 mg Tablets
eBay - samedayship4.6(507)$5.00Lowest(6 pack) Ester-C Vitamin C, Immune Support Tablets, 1000 Mg, 120 Ct
Walmart4.8(27)$82.60Nature's Bounty 1000mg Caplets
Blain's Farm & Fleet4.6(1100)$12.99
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 - Llansamlet Tesco
3.0 (4)Vitamin & Supplements Shop
Tesco Extra, Nantyffin N, Llansamlet, Swansea SA7 9RD
Optima Health & Nutrition
3.8 (4)Health and beauty shop
Swansea Enterprise Park, Alberto Rd, Llansamlet, Swansea SA6 8QP
Thor Supplements
Vitamin & Supplements Shop
77 Pleasant St, Morriston, Swansea SA6 6HH
Holland & Barrett - Swansea Quadrant
4.6 (26)Vitamin & Supplements Shop
The Quadrant Centre, Unit 21 Garden St, St Mary's Square, Swansea SA1 3QW
Holland & Barrett - Neath
3.8 (14)Vitamin & Supplements Shop
2 Green St, Neath SA11 1DD
Peak Supps - Sports Nutrition & Health Supplements
4.6 (76)Vitamin & Supplements Shop
19 Ogmore Cres, Bridgend CF31 3TE
Holland & Barrett - Swansea Tesco
3.3 (12)Vitamin & Supplements Shop
Pontardulais Road C/o Tesco, Cadle, Swansea SA5 4BA
Aliment Nutrition
5.0 (2)Vitamin & Supplements Shop
Old Market Pl, Cwmafan, Port Talbot SA12 9BE
Research & Studies
Enhanced 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
… forms of vitamin C alternative to conventional ascorbic acid include Ester C ® , which is a … 24 h, with a 7-day washout period between phases. Participants received one of four 1000 mg …
202520 citationsSelect dietary supplement ingredients for preserving and protecting the immune system in healthy individuals: A systematic review
C Crawford, LVL Brown, RB Costello, PA Deuster - Nutrients, 2022 - mdpi.com
… where participants were asked to take 1g/day of Ester-C ascorbate, [28] ascorbic acid prepared by … on IOM guidelines for adults 19+ years is 1000 mg/day of vitamin E. Approximately 48 …
202241 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2016-08-24. DSLD Label ID: 63539. 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.
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