American Health

Ester-C® with Citrus Bioflavonoids, 240 Vegetarian Capsules

4.9 · 2803 reviews
3,311 ₽

Gentle and Non-Acidic Unique Vitamin C Formula Vegetarian 500 mg 24-Hour Immune Support Dietary Supplement Non-GMO Suitable for Vegans 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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Gentle and Non-Acidic Unique Vitamin C Formula Vegetarian 500 mg 24-Hour Immune Support Dietary Supplement Non-GMO Suitable for Vegans 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
American Health

It is stated: "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."

5/13/2026
5.0
verified purchase
Love it

Very good quality vitamin C. I like that it’s gentle on the stomach and easy to take. The Ester-C form feels easier to absorb compared to regular vitamin C. Overall a great supplement for daily immune support.

3/10/2026
5.0
verified purchase
NaturesPlus, B-Complex with Rice Bran

High-quality B-complex formula. Tablets are easy to take and have a neutral taste. Good ingredient combination for energy support and nervous system health. Helps with overall well-being and also supports healthy skin and hair. Feels like a reliable daily supplement.

2/24/2026
5.0
verified purchase

I really like this Ester-C formula, which includes bioflavonoids. It’s non-acidic and gentle on my stomach. It's an essential supplement for thyroid and adrenal health, iron absorption, antioxidants, and fighting viruses like coronavirus. It’s one of the best Vitamin C formulas on iHerb. P.S. don’t forget to ✨thumbzzz upp✨ if you like my review.

2/11/2026
5.0
verified purchase
Very good product

Very good product. This is my first time buying it, but it won't be my last. I haven't even had a cold all winter.

2/3/2026
5.0
verified purchase
Good for GERD

decent product and tasteless. t's gentle and non-acidic. i have never used this before, but i'm satisfied with the product and recommend it. The benefits are seen only with higher doses used over a longer time. the size of the capsules is large, some may find it hard to swallow. the packaging indicates that its a quality product

1/25/2026
5.0
verified purchase
The Best Vitamin C

This is the only brand of vitamin C that I buy. Ester-C doesn't exacerbate my GERD. I’ve been on it for years, and it has helped strengthen my immune system. I have an autoimmune disease, and there are a lot of supplements I can't take. I have no problem with American Health Ester-C and the quality of this product. I highly recommend it!

1/9/2026
5.0
verified purchase
Vit C

Great vitamin C — gentle, non-acidic, and very effective. I notice improved immunity, better recovery, and no stomach discomfort. The bioflavonoids make it feel more complete. Excellent daily supplement.

11/15/2025
5.0
verified purchase
good

started taking Ester-C with Citrus Bioflavonoids and I'm genuinely impressed with the overall quality and results. This supplement contains a unique,

10/13/2025
5.0
verified purchase
My favourite

I like that vitamin C , I am taking it with my magnesium, easy on the stomach, and the formula is one of the good one

10/6/2025