Vitamin C (ascorbic acid): People who take high doses (reported at 12 or more tablets daily), tend to have lower levels of vitamin C, but not if also taking a vitamin C supplement (Sahud, Lancet 1971)
Constipation may respond to increased fiber intake, adequate hydration, and physical activity, with stool softeners or gentle laxatives if needed
If you want to explore more of the science, What is in Glutathione: Understanding Its Composition and Benefits is a helpful next read
Understanding Steady-State Concentrations Half-life directly determines how long it takes to reach steady-state medication levels, which matters for when youll experience full effects
doi: 10.1056/NEJMoa2306963 18
It's an instant way to destroy what you've paid for