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Heres what we suggest for these patients: Give them high doses of vitamin B12 (1000-2000 mcg) often (daily or weekly) at first Consider Tiaminal B12 injections, which have both thiamine and B12 Watch their symptoms closely and adjust treatment as needed Experts say that High-dose vitamin B12 therapy can lead to significant improvements in neurological function in patients with deficiency-related neuropathy. In short, customizing B12 injection plans for the elderly and those with neurological issues is key

But, we need more studies to know how well it works and the best dose

PMID 11417628

Build injection into an existing morning routine