Final Thoughts So, where does that leave the question of how long a B12 shot lasts
Even if the underlying problem is treated appropriately and the digestive tract returns to normal, the vomiting, diarrhea, and weight loss may continuebut now because of the vitamin B12 deficiency, not the initial disease process
Kannt A, Pfenninger A
Like most treatments, vitamin B12 injections carry warnings that patients should be aware of, including: Hereditary Optic Nerve Atrophy: People with early Lebers disease (a hereditary form of optic nerve atrophy) should not receive cyanocobalamin injections, as rapid and severe vision loss has occurred
Mood Changes : There have been anecdotal reports of mood swings or changes in emotional well-being, likely due to the changes in energy metabolism
How do I support my metabolism and muscle mass long-term