Combine low intake with impaired absorption, and deficiency becomes highly probable without supplementation
[4] [5] Patients are advised to report persistent abdominal pain, jaundice, or signs of severe allergic reactions immediately
No, and this is the point most marketing pages blur
Even though vitamin B12 shots are most effective in those who have a deficiency in the vitamin, it is hard to know if you have a deficiency and most people will be able to experience the positive effects of regular vitamin B12 injections
This method is typically less painful, and while the absorption might be a bit slower, its just as effective for maintaining healthy B12 levels
The symptoms more likely reflect medication intolerance requiring dose adjustment and supportive care rather than vitamin supplementation