Yes and this is one of the most common reasons patients come to Sacramento Naturopathic Medical Center for B12 injections
Decreased cognitive function, fatigue, lethargy, fainting, depression or irritability, headache, balance issues, and other symptoms are all possible side effects of B12 deficiency
Not for human consumption or therapeutic applications
Compounding Pharmacy FAQs - Prescription Requirements
On-Label vs Off-Label and Compounded Products Vitamin B12 injections are an established medical treatment for confirmed B12 deficiency and related conditions (for example, pernicious anemia and certain malabsorption states), as summarized by the NIH Office of Dietary Supplements in its Vitamin B12 fact sheet for health professionals
This increases the risk of malnourishment and stops your body from getting the calories, vitamins, and minerals it needs to heal