side effects for glutathione Injection — Risks & Safety (2026) What Are the Side Effects

Pre-existing Peripheral Neuropathy Peripheral neuropathy damages the nerves, leading to weakness, numbness, and pain

It is one of the most effective solutions for increasing serum glutathione levels, along with perlingual administration (applied to the tongue) (perlingual glutathione reaches the bloodstream without passing through the gut, thus avoiding the path of gamma-glutamyl transpeptidases)

Some people may possess a variation of this enzyme that does not work as efficiently (poor metabolisers)

While these studies are essential for advancing scientific understanding and can sometimes inform human biology, their results cannot be directly extrapolated to human physiology in a 1:1 manner

That is another reason medical supervision matters