While benefits vary person to person, many people report feeling significantly better, especially if they were deficient before starting
but many researchers do believe there is some kind of link between vitamin B12 and heart health
B complex injections contain vitamins B1, B2, B3, B5, and B6
[DOI] [PMC free article] [PubMed] [Google Scholar] 18
Almost half said their doctor did not always consider what they wanted for their care. The problem here is that b12 deficiency is not a problem like depression which has numerous pharmacological and psychosocial options which can be presented as a buffet to be examined and sampled
Popular but Problematic A few peptides dare heavily marketed despite serious concerns: (Body Protection Type Compounds) Zero human clinical trials all evidence is from rodent studies Unknown safety profile in humans No FDA approval or legal pathway to human use Banned by WADA (World Anti-Doping Agency) as a performance enhancer Explicitly listed by FDA as not eligible for compounding (Other Thymosin related Compounds) Not the same as thymosin alpha-1 (which does have approval in some countries) No human clinical trials for healing or recovery Banned by WADA Cannot be legally compounded or prescribed in the US Yes, online forums are filled with anecdotal reports of miraculous healing from these peptides