While supplementing with injections is considered safe in most cases, heres what you should know before you try it
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Madzarac G et al
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)
they're unregulated, potentially impure, and lack dosage precision, posing health risks like bacterial contamination or heavy metals.[44][45][46] Unregulated online sources amplify dangers with potential counterfeits, unknown additives, or legal violations, as they're not FDA-approved and may lead to adverse effects or inefficacy.[47][48][49] Prioritize compounding pharmacies for reliable, compliant options