Systematic review on daily vitamin B12 losses and bioavailability for deriving recommendations on vitamin B12 intake with the factorial approach
A deficiency can lead to a form of anemia that causes fatigue
The 4 stages of B12 deficiency include (31): Stage 1: decreased levels of vitamin B12 in your blood Stage 2: low levels of vitamin B12 in your cells along with metabolic abnormalities Stage 3: neurological and psychological symptoms like anxiety, confusion, problems with balance, and others Stage 4: macrocytic anemia very large red blood cells (32) B12 deficiency can cause a variety of symptoms, including fatigue, headaches, depression, pale or yellow skin, mental impairment, and pain and inflammation in the mouth and tongue
They made it very easy to use, even for beginners
however, for a high dose of vitamin b12, an injection may be a better option for you