According to the 2025 meta-analysis by Alfalasi and colleagues, sublingual B12 showed an approximate 199% mean increase in serum B12 compared to approximately 307% for intramuscular injections
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Learn more: How often to get MIC B12 injections The FDA does not approve compounded medications for safety, quality, or manufacturing
Questions to Ask Your Doctor To get the most out of your consultation, its helpful to come prepared with questions
Each vitamin plays a unique and irreplaceable role in the body: Vitamin B6 : This vitamin is essential for protein metabolism, the production of neurotransmitters such as serotonin and dopamine, and the synthesis of hemoglobin , which is crucial for oxygen transport in the blood
For individuals with atrophic gastritis, pernicious anaemia, or those taking proton pump inhibitors , food-bound B12 absorption is already compromised
