is glutathione safe for heart What Glutathione? — Purifi IV Oxidative Stress and Heart Disease:

PMID 24327038

Another example involves folic acid during pregnancy

A glutathione injection delivers glutathione directly into the body, where it supports antioxidant activity, helps manage oxidative stress, and plays a role in normal cellular processes related to detoxification and overall wellness

The linear fitting afforded R min =1.65, and R max =2.98

doi: 10.1016/j.phymed.2013.02.006 352 GunesHGulenDMutluRGumusATasTTopkayaAE

While many people take high doses for long periods, it is often best to use a 1500 mg dose for a specific period (such as 36 months) to reach a goal, and then transition to a lower maintenance dose