Your prescription will specify which route to use
A systematic review of 35 prospective cohort studies assessing the association between vitamin B 12 status and cognitive deterioration in older individuals with or without dementia at baseline did not support a relationship between serum vitamin B 12 concentrations and cognitive decline, dementia, or Alzheimers disease (79)
A schedule that fits you
Whilst the intrinsic factor-mediated absorption pathway can only process approximately 1.52 micrograms of B12 at a time, passive diffusion allows absorption of about 1% of higher doses
This article explores the different kinds of B12 supplementation, why one might be preferable over the other, and if there are any extra benefits or risks depending on that choice
It has shown efficacy in enhancing cognition, supporting wound healing, delaying skin aging, and protecting neural tissue from degeneration and injury