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You've done the cardio

As researchers learn more about its potential to extend lifespan, boost immunity, improve strength and physical performance, and ward off age-related illnesses, more people are supplementing with glutathionewhich is generally very safe

[Google Scholar] Figlin 2003 Figlin E, Chetrit A, Shahar A, Shpilberg O, Zivelin A, Rosenberg N, et al

The dose stays the same at 1000 mcg (1 mg) per injection