Ester-C® | GNC
Vegetarian Vegetarian
No Preservatives No Preservatives

Product Information



  • Gentle and Non-Acidic
  • Patented Vitamin C Formula
  • 100% Vegetarian
Ester-C® is a breakthrough patented Vitamin C formula supported with naturally occurring metabolites. Metabolites help enhance the absorption of Vitamin C by your white blood cells, an important part of your immune system.* Ester-C®’s unique, chemical-free manufacturing process neutralizes pH, making it non-acidic and gentle on the stomach.* In a daily 1,000 mg dose, Ester-C® delivers 24-hour immune once a day is all you need.* Added Citrus Bioflavonoids may help your body better absorb and utilize Vitamin C.*


Nutrition Facts
Serving Size  1 Vegetarian Tablet(s)
Servings Per Container  180

Amount Per Serving     % DV

Vitamin C (as Ester-C® Calcium Ascorbate) 1000mg   1667%
Calcium (as Ester-C® Calcium Ascorbate) 110mg   11%

Citrus Bioflavonoids Complex:  200 mg   **

** Daily Value (DV) not established.
Other Ingredients
Vegetable Cellulose, Calcium Silicate , Vegetable Magnesium Stearate, Vegetable Stearic Acid
Label (click image to enlarge)

How To Use

For adults, take one (1) vegetarian tablet daily, preferably with a meal.
If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur. Keep out of reach of children. Store at room temperature. Do not use if seal under cap is broken or missing.
Ester-C® are licensed TMs of The Ester C Company. U.S. Pat Nos. 6,197,813 and 6,878,744. Carefully Manufactured by AMERICAN HEALTH, INC. Ronkonkoma, NY 11779 U.S.A. © 2012 American Health, Inc.


5.0 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great product to boost your immune system as well as give you energy
June 30, 2019
1 month ago
I got recommended by a friend about Ester-C. It seems working well with me as well.
June 4, 2019
2 months ago
Ester C helped me a lot when I have colds dripping in my nose easily gone
March 17, 2019
4 months ago
Great Vitamin C
Vitamin C that is great on the stomach.
April 2, 2018
1 year ago
Excelente muy bueno
March 18, 2018
1 year ago
Ester-C 1000 MG with citrus bioflavonoids 180 tbs.
As I indicated in my previous review, this product is
Superior to any other product in it's class for me !!!
I have been using it & my wife for years :) no problem
Ever with it ,never irritating to our stomach :) so far this
Product is potent & has lots of bioflavonoids in it :) I can recommend it to Anybody who is not allergic to it !!! :)
July 27, 2017
over 2 years ago
More than just acid
I definitely recommend this product over ascorbic acid. Bioavailability and absorption matter when it comes to vitamin supplements. Raw fruits and vegetables are the best, but if you need a boost in vitamin C, go with this.

The metabolites you would need in order to get anything out of the ascorbic acid would be in the food that you would have been eating anyway if you didn't need the supplement. This product is a true supplement.
May 7, 2017
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Is ester c buy one get one at 50 off?
A shopper on Mar 13, 2018