Neomycin, colchicine, para-aminosalicylic acid, or excessive alcohol intake longer than two weeks may cause malabsorption of vitamin B12. Chloramphenicol and other drugs having bone marrow suppressant properties may cause a lack of therapeutic response to vitamin B12
Each has its own special features
This binding is necessary for the absorption of Vitamin B12, and when there is a lack of it, the body cannot absorb the vitamin efficiently, leading to deficiency
A lack of B12 can lead to anemia (not having enough red blood cells), which causes you to feel tired and weak
Additionally, other factors such as having had gastric bypass surgery or taking antacids long-term can lead to deficiency
Serum potassium levels should be monitored during the first 48 hours of treatment in patients with pernicious anemia