intranasal glutathione in parkinson's disease and Targeting Ferroptosis in Parkinson's Disease:
Description
All of the patients who were treated orally corrected their vitamin B12 levels and at least two-thirds corrected their hematological abnormalities

| Aydin, C., et al

for example, a weekly B12 dose of 2,500 g yields approximately 14.2 g of absorption

Surprisingly, this effect was not reproduced by the ER agonist, PPT (150)
