b12 injections making me feel tired What Is Injection What's all the Buzz About Vitamin B12 Shots? b12 injection makes me sleepy
Description
One of the most common things I look for when I see unexplained high B12 with concurrent symptoms is mast cell activation syndrome (MCAS)
Choosing between oral supplements and injections depends entirely on your individual health status, the severity of your deficiency, and your ability to absorb the vitamin

they boost metabolism, help your liver function, and dispose of fats more successfully
Faster Efficacy: Effects can be felt more quickly than oral supplements, which require digestion
In either event, the fact remains: Vitamin B12 is a serious deficiency that can lead to multiple negative side effects