Is taking glutathione safe?

Our glutathione is a research reagent, so it isn’t meant to be taken by anyone. For glutathione in general, the clearest safety signal comes from contamination rather than the molecule. In 2026, the CDC reported more than 25 people in at least four states who became ill after IV glutathione made by compounding pharmacies, with at least three hospitalized. Elevated endotoxin in supplement-grade ingredients was the likely cause.

The FDA issued a similar alert in 2019. That’s why endotoxin testing matters for any glutathione lot, including material for cell work, where endotoxin can trigger inflammatory responses and skew results. Every batch we sell is screened for endotoxins, heavy metals and sterility, as described on our lab testing page. Shop Glutathione online for laboratory research.