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The short answer is that taking these two together is generally considered safe and may offer a tiered approach to wellness

The source problem

The paper, " Randomized Clinical Trial of Long-Term Glutathione Supplementation for Protection from Oxidative Damage and Improved Glycemic Control in Elderly Type 2 Diabetic Patients " investigates the effects of oral glutathione (GSH) supplementation on oxidative stress and glycemic control in individuals with Type 2 Diabetes Mellitus (T2DM)

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Activation of MEK1/2 activates MAPK, which is the downstream molecule in the signaling pathway and controls the final cell response to stress [165, 172, 173]

If you are layering them, however, apply acids first