If you are severely deficient in vitamin B12, you might be recommended B12 shots every other day for about two weeks to replenish your B12 stores and correct symptoms
PMC 5756557
On the other hand, those with severe kidney problems taking high amounts of B12 may see a high level of toxicity since the excess vitamin B12 wont get eliminated from the body easily
Here are some food sources of vitamin B12: clams liver (beef or chicken) fish (salmon, trout, tuna, sardines) meat (beef, pork, lamb) poultry (chicken, turkey) eggs dairy products (milk, cheese, yogurt) fortified plant-based milks and cereals nutritional yeast Low levels of vitamin B12 can lead to a range of neurological symptoms, including depression, anxiety, and mood swings
Minimize side effects by staying hydrated and resting adequately
Frequently Asked Questions (FAQs) Can high vitamin B12 levels affect pregnancy