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Administering a dose of Vitamin B12 through an injection is a more efficient way of delivering the vitamin to the body, as it bypasses the inefficiency of the gut

(5) Cognitive and vision health Low levels of ergothioneine in older adults have been linked with cognitive decline

Romero A, Ramos E, Lpez-Muoz F et al (2020) Coronavirus disease 2019 (COVID-19) and Its neuroinvasive capacity: is it time for melatonin

Where serum B12 results are borderline or do not fit the clinical picture, further tests such as active B12 (holotranscobalamin), methylmalonic acid, or homocysteine may be helpful
Treatment groups (Tyr, Cys, Trp) were statistically different than the HGF treated group (P 0.05
