L-glutathione is a natural antioxidant made in the body from three amino acids: cysteine, glutamine, and glycine. It helps protect cells from oxidative stress and supports detoxification, immune function, and liver health.

What it does

Glutathione is often described as the body’s “master antioxidant” because it helps neutralize free radicals and supports cell repair. It is especially important in the liver, where it helps process toxins and other harmful substances.

Why people take it

People use L-glutathione supplements for reasons like antioxidant support, skin brightening, immune support, and general wellness. Some sources also discuss possible benefits for fatty liver disease, insulin resistance, and certain inflammatory conditions, though the strength of evidence varies by use.

Important caution

Glutathione supplements are not automatically harmless just because they are popular, and safety depends on the product, dose, and your health situation. Recent reporting also shows regulators have investigated some glutathione- containing skin-lightening products because of safety concerns.

Bottom line

In simple terms, L-glutathione is a natural antioxidant your body makes to help protect cells and support detox processes. Supplements may help in some situations, but they should be used carefully rather than treated as a cure- all.

TL;DR: L-glutathione is a body-made antioxidant that supports detox, immune health, and cell protection, with supplement benefits that are possible but not guaranteed.