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Dosage Considerations: The typical dosage for oral glutathione supplements ranges from 250 mg to 500 mg per day
Similarly, although hepatic dysfunction can occur with large niacin doses (1-3 grams daily over months) causing elevated liver enzymes or jaundice, niacinamide at 100 mg is very unlikely to have any adverse effect on the liver
doi:10.1038/s41392-024-01823-2 203
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