When stratified by administration route, the mean percentage changes were: Intramuscular (IM): 307% Oral: 285% Sublingual: 199% IM administration showed the highest average B12 increase, although oral and sublingual routes also yielded substantial improvements, supporting their use as effective and less invasive alternatives
[PMID: 1648656]( Eussen SJ, de Groot LC, Clarke R, et al
Anyone looking for a natural energy or mood boost
Conclusion While Vitamin B12 injections are effective in treating deficiencies and related conditions, they can cause a range of side effects, from mild skin reactions to severe anaphylaxis and neurological symptoms
Because they can be tailored to different goals, they may be used as part of a broader plan focused on vitality, healing, energy, or long-term wellness support