vitamin b12 supplements vs injections shots: Uses, benefits, and side effects Vitamin B12 Injections: Unlock Energy,

With an oral supplement, the B12 needs to be absorbed through your digestive system first before getting to your blood, which takes a lot longer

When you have adequate levels of B12, your immune system can function more effectively, reducing the risk of illnesses and helping your body respond more swiftly to pathogens

It's not just about B12

However, some rare side effects of too much vitamin B12 can include: Headache Weakness Nausea Diarrhea Tingling sensations in the hands and feet Allergic reactions or skin rash (uncommon) When To Seek Medical Advice Risk of vitamin B12 deficiency: Groups at a higher risk of vitamin B12 deficiency include older adults, people who only eat plant-based foods (vegans and vegetarians), and those with certain chronic conditions (gastrointestinal disorders that can affect vitamin absorption)