It is most widely encountered as a cosmetic ingredient in topical skincare formulations, where it is used under cosmetic-ingredient rules rather than as an approved therapeutic
B12 injections are often better than taking oral vitamins because they are absorbed faster and work directly
Intravenous use can be very effective, and doesn't cause diarrhea by this route, but this agent must be given extremely carefully, since an error in dosing can shut down the bone marrows production of blood cells, and potentially be fatal
Strong evidence Peptide immunotherapy (allergen-derived peptides) has the strongest evidence base
The potential for gastrointestinal adverse effects, particularly nausea and vomiting, may lead to dehydration and worsening of renal function in vulnerable patients
While many users report profound healing benefits with minimal side effects, the lack of controlled human trials means the full safety profile remains largely unverified