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Plenty more at https://chrismasterjohnphd.com/support! Question: Why would glutathione cause a headache? Probably sulfur intolerance. I'm guessing that's conversion to sulfite in the gut or something like that. Or production of hydrogen sulfide gas in normal metabolism leading to vasodilation.

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DISCLAIMER: I have a PhD in Nutritional Sciences and my expertise is in performing and evaluating nutritional research. I am not a medical doctor and nothing herein is medical advice.

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