how long to b12 injections take to work Does It For Work? B12 Injections: Who Should Get
Description
By doing so, it improves metabolism and weight control

Healthline recommends foods rich in vitamin B12, including beef, eggs, dairy, and fortified cereals

These injections can help your body regulate your sleep, mood, and appetite cycles, giving you a long-lasting energy boost
Long-term human safety data not established

If it lasts more than a week or severe, then inform your doctor