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Real feedback from researchers and customers. Every review is tied to a verified purchase.

4.50
out of 5
141 verified reviews
5
70%
4
17%
3
8%
2
6%
1
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★★★★★
4.50 / 5
Verified Reviews
Showing 1–2 of 2 reviews for Glutathione 200mg
Verified

antioxidant standard

glutathione is a workhorse for oxidative stress assays. 22EXO's product is clean and at the right concentration.

May 1, 2026
Verified

good purity, mild reduction-state concern

Reduced GSH is sensitive to oxidation. Their product appears to be in proper reduced form on Ellman's assay but I'd recommend storing at -20C immediately on receipt and using nitrogen overlay if you reconstitute partial volumes. This is a peptide-quality issue not a 22EXO issue.

May 1, 2026

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