It can also cause mouth ulcers, vision issues, and pins and needles
To naturally support brain health, aim for 79 hours of quality sleep, maintain a consistent sleep schedule, exercise regularly, manage stress, eat a balanced diet, stay hydrated, and limit caffeine and screen exposure before bedtime
References Hsieh MJ et al
It can mean more binding protein in circulation, vitamin released from injured cells, reduced clearance by the liver or kidneys, recent intake, or analytical interference, where the measured value does not accurately reflect the true B12 status
"The IV and vitamin injections were administered with expert care, and I felt an immediate boost of energy and overall wellness." Tiffany C
Additionally, vitamin B12 is water-soluble, so any excess is naturally filtered by the body