B 29 AQ 1500MCG PREFILLED SYRINGE(PFS) works by aiding in the synthesis of myelin (lipid rich material that covers nerve fibres) which helps in protecting the nerve fibres and thereby providing relief from diabetic & peripheral neuropathy, sciatica pain and back pain in affected individuals
But also different methylation processes, due to a B12-related deficiency of S-adenosylmethionine, seem to be causally involved in neuropsychiatric problems
Seiwerth S, Sikiric P, et al
Capsules are the least effective in regards to absorbability but if you are seeking to treat gut issues a localized healing effect is seen to be effective
Furthermore, higher levels of BDNF have been involved in long-term potentiation of neurons and synaptic plasticity
Raj GM, Raveendran R (2019) Introduction to basics of pharmacology and toxicology: volume 1: general and molecular pharmacology: Principles of drug action