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A similar or greater dosage is used for research on nasal spray formulations
The duration of vitamin B12 in the body depends on several factors, including how well it is absorbed and stored and individual health conditions
doi: 10.1016/j.lfs.2011.01.015
Right image credit: James Heilman, M.D
B12 Injections and Weight Management While B12 injections are often marketed as a way to boost energy and support weight loss, its important to note that current scientific evidence does not support the use of B12 injections for weight management in individuals with normal B12 levels
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