Side effects from B12 supplementation are rare, but possible when receiving B12 injections
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Some uses are for increased energy, weight loss, stress relief, mental and emotional stability, and supplementation of diets deficient in B Vitamins, and treatment of vitamin B12 deficiencies
NICE says that when oral replacement is used for confirmed or suspected malabsorption, the prescribed dose should be at least 1 mg a day
[86] Fortified foods [edit] Foods for which vitamin B 12 -fortified versions are available include breakfast cereals, plant-derived milk substitutes such as soy milk and oat milk, energy bars, and nutritional yeast
The NICE Clinical Knowledge Summary for vitamin B12 deficiency outlines specific treatment schedules: for patients without neurological symptoms, hydroxocobalamin 1 mg intramuscularly three times a week for 2 weeks