According to the National Institutes of Health, oral B12 has a 1 to 2 percent absorption rate
Injections can bypass the digestive system and directly supply the body with adequate vitamin B12, ensuring that those affected can maintain healthy nerve and red blood cells
Ensuring that you have a sufficient amount of B12 in your body can help the body with this function much more reliably, allowing you to have the energy that you require for proper functioning throughout the day
Those experiencing fatigue or hair thinning: B12 injections can improve energy and hair health, whether due to lifestyle factors or underlying deficiencies
B12 occurs naturally in animal foods such as meat, poultry, eggs, fish, and dairy, and it is added to various fortified products like certain plant milks, cereals, and nutrition drinks