oral vs injectable b12 Injections Pills: Richmond's Complete Guide Vitamin B₁₂ Supplementation: Oral Capsules

Additionally, dietary supplements in the United States are not regulated the same way as food products are

Diurnal rhythms of paraventricular hypothalamic norepinephrine and food intake in rats

However, some people cannot take vitamin B12 injections safely, including those with Lebers disease or similar eye concerns, kidney disease, liver disease, iron or folic acid deficiency, an active infection, or those taking medications that may interact with vitamin B12

Still, an emergency room is only reserved for emergency medical situations, which means that you will only receive services if your situation is life-threatening