side effects of too much vitamin b12 injections Are Shots Safe? Royal Palm Beach Medical Group How Much Vitamin B12 Is

Other symptoms can include peripheral neuropathy , characterised by weakness and pain in the limbs, and mood disturbances due to its role in neurotransmitter synthesis

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

Including B12-rich foods in your diet can help maintain adequate levels

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

Strengthens Immunity Supports overall immune system function

An incorrectly administered intramuscular injection can lead to severe pain, nerve damage, and long-term health complications