Everyone says NAC can make glutathione. Wrong. Evidence against this is staring right at you. As you can see here, my wife's GCLC gene is genetically slower. Thus, she cannot convert Cysteine Figure 3 from Glutathione synthesis. Semantic Scholar Glutathione in Brain: Overview of Its Conformations, Functions, Biochemical Characteristics, Quantitation and Potential Therapeutic Role in Brain Disorders Neurochemical Research Springer Nature Link Targeting Glutathione Metabolism: Partner in Crime in Anticancer Therapy Glutamate: Synthesis, transport, and supplement interactions