Skip to content

Ester-C 24 Hour Immune Support

NatureSmartUpdated April 2026

Product Information

Form
Tablet or Pill
Servings Per Container
30
Product Type
Other Combinations
DSLD Entry Date
2022-09-22

Target Groups

VegetarianAdult (18 - 50 Years)Gluten FreeDairy FreeSugar Free

All Ingredients

IngredientAmount% DV
Vitamin C1000 mg1667%
Calcium110 mg11%
C-Sorb Citrus Bioflavonoid Complex102 mg

† Daily Value not established.

Label Statements

Suggested/Recommended/Usage/Directions

Directions: For adults, take one (2) tablets once daily, preferably with a meal.

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.

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.

Storage

Store at room temperature.

Precautions re: All Other

Do not use if seal under cap is broken or missing.

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.

Brand IP Statement(s) re: (c), (TM), (SM)

Copyright 2016 NatureSmart, LLC

Seals/Symbols

Made in the USA with select ingredients from around the world

Formulation re: Other

Patented immune health formula

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.

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: Other

Patented Ester-C delivers 24-hour immune and antioxidant support...so one serving a day is all you need.

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.

Formulation re: Other

Clinically studied to last longer than regular Vitamin C

General Statements: All Other Content

Stomach friendly!

Suggested/Recommended/Usage/Directions

2 per day

FDA Statement of Identity

Dietary Supplement

Formulation re: Other

Ester-C lasts longer than regular Vitamin C and supports your immune system for 24 hours!

Formulation re: Other

Enjoy the benefits of Ester-C every day! Patented 24 hour immune support Clinically studied to stay in the immune system longer than regular vitamin C Non-acidic and gentler on your stomach than regular Vitamin C

General Statements: All Other Content

Not all Vitamin C is created equal...There is only one patented Ester-C formula

General Statements: All Other Content

Call toll free 1-866-417-0739 with questions or comments, Mon.-Sat., 9am-7pm EST.

Supplement Facts Panel

Supplement Facts
Serving Size 1 Tablet(s)
Servings Per Container 30
Amount Per Serving% Daily Value*
Vitamin C
1000 mg1667%
Calcium
110 mg11%
C-Sorb Citrus Bioflavonoid Complex
102 mg

* Percent Daily Values are based on a 2,000 calorie diet.

† Daily Value not established.

Find on Amazon

Similar Products