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Immune support; Antioxidant support; Collagen synthesis support
People who want a gentler vitamin C option or those with busy lifestyles seeking once-daily antioxidant support.
Adults take 2 vegetarian capsules once daily, preferably with a meal; taking with food may improve tolerance of vitamin C.
Non-GMO; Vegetarian; Suitable for Vegans; No gluten; No yeast; No wheat; No milk or milk derivatives; No lactose; No soy; No egg; No grapefruit; No sugar; No artificial color; No artificial flavor; No sodium
Vitamin C functions as an antioxidant and cofactor for collagen and carnitine enzymes, and calcium ascorbate is a buffered form that may be gentler on the stomach while supporting cellular antioxidant defense.
Caution: High intakes may cause digestive discomfort for some people; take with food to reduce the chance of stomach upset.
Citrus bioflavonoids are polyphenols that may help support capillary integrity and enhance vitamin C recycling and uptake in cells.
Caution: May interact with certain medications or botanicals that affect blood flow because bioflavonoids can influence vascular function.
Calcium supports normal muscle and nerve function and in this form acts as the buffering mineral bound to ascorbic acid.
Caution: Consider total daily calcium from diet and supplements to avoid excessive intake.
Buffered vitamin C as calcium ascorbate supplies antioxidant support while being gentler on the stomach. Citrus bioflavonoids complement vitamin C by supporting its cellular uptake and stability, and by offering additional antioxidant activity.
Label Warning: If you are pregnant, nursing, taking any medications, or have any medical condition, consult your doctor before use. Stop use and consult your doctor if any adverse reactions occur.
Who should be cautious: People taking thyroid medications or certain antibiotics may need to separate calcium-containing products by at least 2 hours. Those with a history of kidney stones or high blood calcium may want to discuss vitamin C and calcium intake with a healthcare provider. If you are on medications that may interact with calcium, consult your healthcare provider before use.
Storage: Store at room temperature.
Reviewers often mention it is non-acidic and easy to swallow for daily use.
Many users say they experience fewer colds and feel overall benefits when taking it regularly.
Some customers would prefer the formula without stearic acid.
This product is guaranteed authentic and backed by our easy returns & refunds policy. Details
Vitamin D3 & K2 may complement Vitamin C by supporting bone health and immune function, promoting a balanced approach to wellness.
AI generated. Not medical advice.
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Ester-C® is a unique, breakthrough Vitamin C formula containing naturally occurring metabolites. Metabolites help enhance the retention of Vitamin C by your white blood cells, an important part of your immune system. Ester-C®'s water-based 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 support...so once a day is all you need. Added Citrus Bioflavonoids may help your body better absorb and utilize Vitamin C.
For adults, take two (2) vegetarian capsules once daily, preferably with a meal.
Vegetable cellulose, vegetable stearic acid.
No gluten, no yeast, no wheat, no milk or milk derivatives, no lactose, no soy, no egg, no grapefruit, no sugar, no artificial color, no artificial flavor, no sodium.
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.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
| Supplement facts | ||
| Serving Size: 2 Vegetarian Capsules | ||
| Servings per Container: 120 | ||
| Amount Per Serving | % Daily Value | |
| Vitamin C (as Ester-C® Calcium Ascorbate) | 1,000 mg | 1,111% |
| Calcium (as Ester-C® Calcium Ascorbate) | 110 mg | 8% |
| Citrus Bioflavonoids Complex Citrus Bioflavonoids (Citrus limon) (fruit), Sweet Orange, Tangerine, Lime, Lemon, Acerola, Rutin, Hesperidin Complex (Citrus spp.) (fruit), Naturally Occurring Vitamin C Metabolites | 400 mg | ** |
| **Daily Value not established. | ||
