The amounts used topically or in injectable protocols are tiny compared to dietary copper intake
Improved mood: B12 helps the synthesis of chemicals in your brain including serotonin and dopamine, both of which play a significant role in regulating your mood
However, this extrapolation from one organ to another is questionable as the exposure levels, the phase I metabolic capacity to generate NAPQI, the phase II metabolic capacity to eliminate APAP, and potential adaptive mechanisms in response to an APAP-induced cellular stress are not well described in the CNS system
Studies on diabetic neuropathy, HIV-induced neuropathy, and chemotherapy-related neuropathies highlight its benefits (Onofrj et al., 2013)
These factors can cause significant price variations, so its wise to consider them before buying