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Presented for research literature review only Konosic S et al
While the NIH does not specify a tolerable upper intake level for vitamin B12, a study published in the JAMA Network Open found that high intakes of vitamin B12, such as from daily supplementation of 25 micrograms or higher, increased the risk of bone fracture [3] [4]
Once the deficiency is addressed, a maintenance dose can be given to keep B12 levels within the optimal range
The positive benefits of the ingredients found in Approved Science Glutathione have been published by organizations and journals such as the Journal of Laboratory and Clinical Medicine, Journal of Chromatography, and International Journal of Sport Nutrition and Exercise Metabolism
Common adverse effects include headache and blurred vision, with systemic cholinergic effects such as excessive sweating and increased urination
The 5 year warranty is good until you realize you have to pay to have it shipped across the country instead of a pre paid package being sent to you, So unfortunately its quite a hassle
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