how long does vitamin b12 injection last in your system Do Injections Last? How Quickly Does B12 Shot

Better Brain Function: B12 is important for maintaining healthy nerve cells and is involved in neurotransmitter signaling

Certain health conditions such as intestinal or stomach problems, poor nutrition, cancer, HIV, pregnancy, old age, veganism and alcoholism can cause vitamin B12 deficiency

Most patients begin to notice the effects in 24 to 72 hours , depending on how deficient they are and what symptoms theyre experiencing

Depending on the degree of the deficiency, your doctor may recommend that you receive subsequent injections over a few weeks or ongoing, routine appointments

Some people claim you may lose up to 4 lb in a week