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Unlike fat-soluble vitamins (A, D, E, and K) that can build up, B12 has a strong safety record and toxicity is rare

It attracts immune cells, builds new blood vessels, and stimulates the growth factors your body needs to rebuild tissue faster and better

A 2026 evidence review of microglial synaptic pruning, HGF/c-Met signalling, neuroinflammation, NHS treatment gaps, and realistic expectations for the UK's 2.1 Read the full review Autoimmune, Gut & Inflammatory Where immune activity and the gut meet cognition

People with more complex injuries or chronic symptoms may need a more careful medical assessment before considering BPC-157

Better exercise tolerance