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201 In a preliminary study, 10 people with obstructive sleep apnea were found to have dysfunction of the delicate lining of blood vessels (the endothelium) compared with healthy controls, which improved to a level comparable with that of controls after a single 500-mg dose of intravenous vitamin C

Dosing by Route Protocol Timeline Weeks 12 (ramp): 200250 mcg once daily subcutaneous

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In a 2024 case study , researchers reported one instance of mixed-state bipolar disorder that may have been triggered by vitamin B12 overdose

Third, our study evaluated the efficacy of glutathione supplement capsules only by using the Janus Facial Analysis System

Nature: New biology, 243(124), 85-87