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Free shipping over $50No proprietary blends · fully disclosed labelsThird-party tested · GMP certified facility

Customer Reviews

4.6 out of 5 · 22 reviews

Reviews are a representative sample of real customer reviews aggregated from public data and matched to this product; written reviews are representative samples, not verified individual purchases.

4.6

out of 5

Five Stars

Excellent product.

Hannah M.·May 29, 2016·1 found this helpful

Five Stars

great product I give it credit for my lack of wrinkles, I've been using it for over 40 years

Liam F.·September 23, 2014·1 found this helpful

Esterol Ester C

My naturopathic doctor recommended this vitamin C because she feels that Allergy Research group makes a high quality, high potency product. I recently started to take this type of vitamin C, and I feel it’s definitely very potent and effective. If you are looking for an Ester C, I would recommend this one.

Diego M.·August 22, 2022

It's fine.

It's fine. Did what I expected, nothing more. Might try other brands before reordering.

Vanessa B.·March 18, 2023·7 found this helpful

Been taking this for about six weeks.

Been taking this for about six weeks. Energy is more consistent and I feel less sluggish in the afternoons. Happy with the purchase.

R. Thompson·February 29, 2024·10 found this helpful

Third-party tested, clean label.

Third-party tested, clean label. That's what I look for first. Actually works too, which is a bonus.

Justin O.·October 20, 2024·2 found this helpful

Showing 6 of 13 reviews