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American Health

Ester-C® with Citrus Bioflavonoids, 225 Vegetarian Tablets

4.9 · 17269 reviews
2,067 ₽

Non-Acidic Gentle and Non-Acidic Unique Vitamin C Formula Vegetarian 24 Hour Immune Support Dietary Supplement 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.

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Non-Acidic Gentle and Non-Acidic Unique Vitamin C Formula Vegetarian 24 Hour Immune Support Dietary Supplement 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.

Customer reviews

5.0
verified purchase
alloriginaleverythingworksnoprescriptions

I've used megadoses of vitamin c for years. When I'm at home I use a powder, but at work I carry these. Truly an amazing product! They are formulated to break down quickly, without stomach upset, so they can be taken on an empty stomach if desired. I believe that nutritional supplements saved my life. I've tried a lot of products, and I know what works and what doesn't. My reviews are honest, straighforward, and based on my experience. Read my other reviews to quickly learn from my three decades of research and experimentation.

9/7/2012
5.0
verified purchase
Only tolerable form of Vitamin C for gastritis sufferers

Ester-C stays in your system longer than regular vitamin C, as in up to 24 hours. The naturally occurring metabolites in the formula, teeny tiny molecules that run your metabolism, are the reason why this C can last from sunrise to sunrise. In addition, it is designed to be nonacidic, meaning that it has a neutral pH. Therefore, it was the only form of Vitamin C that I could be taking while I was having serious erosive gastritis, bile reflux, duodenitis, malabsorbtion, severe weight loss and SIBO (bacterial overgrowth in my small intestine) and I needed to boost my immune system because my digestion, absorption and metabolism was a big mess. It did not make my stomach burning worse. So it is the right form of Vitamin C if you have GERD, or are sensitive to acidic food as well and need to supplement with C.

4/28/2019
5.0
verified purchase
很好!

I really like this type of vitamin C. It doesn’t upset my stomach, and I’ve repurchased it many times.

4/1/2026
5.0
verified purchase

I don't see any side effects.Everything is of high quality, The ingredients are good, I like the packaging, The benefits The quality is perfect. The ingredients are natural. The taste is pleasant, not harsh. Frequent use. The size corresponds to the description. Standard size packaging. The composition is natural without additives. The benefit is great.

2/9/2026
5.0
verified purchase
Good quality

Good quality Ester-C with bioflavonoids that’s gentle on the stomach. I use it regularly for immune support. Easy to take daily.

1/2/2026
5.0
verified purchase
Gentle Yet Powerful Daily Vitamin C Support

The American Health Ester‑C with Citrus Bioflavonoids tablets are truly excellent in quality, with a gentle but effective ingredient profile. The package of 225 vegetarian tablets is generous and perfect for daily use. I’ve noticed real benefits in immune support and overall wellness since adding these to my routine. I appreciate that Ester‑C is easy on the stomach — no irritation even when taken frequently. The added citrus bioflavonoids give extra antioxidant support, making this more than just basic Vitamin C. Whether I take them with meals or on busy days, the tablets fit seamlessly into my daily supplement habit. Highly recommend for anyone looking for dependable, gentle immune support!

12/30/2025
5.0
verified purchase

Acidic Gentle and Non-Acidic Unique Vitamin C Formula Vegetarian 24 Hour Immune Support Dietary Supplement 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 the advanced active immune system support and the potent antioxidant activity you can depend on. Added citrus bioflavonoids may help your body better absorb and utilize vitamin C.

11/28/2025
5.0
verified purchase

Powerful antioxidant supplement! American Health Ester C Citrus Bioflavonoid has excellent quality and well-measured mg dosage that delivers high potency without harsh acidity on the stomach. The ingredients are clean, the taste is pleasant, and the size of the capsules is convenient. I’ve noticed real benefits in immunity and overall antioxidant support. Highly recommend for daily use!

11/19/2025
5.0
verified purchase
מצוין!

I’m really impressed with this product! The quality is excellent — you can tell right away from the texture and how well it works. It’s easy to use, feels natural, and delivers noticeable results. Shipping was fast and everything was well-packaged, as always with iHerb. Definitely a great purchase — I’ll be reordering for sure!

11/7/2025
5.0
verified purchase
Quality supplement

Very good for the immune system. I recently ran out and didn't reorder for about 2 months because of my budget. I figured I could wait, but I'm so sorry I didn't reorder. I got a very painful sore throat that I hadn't experienced in years. Then I remembered I was not taking this Vitamin C, and immediately reordered! So, I will not be without this. It's worth it!

10/29/2025