**2.3 Drug-induced megaloblastic anemia**

A condition where the growth of RBC precursors (Megaloblasts) in the bone marrow is aberrant [26–28]. Drugs including amino salicylic acid, colchicine, neomycin, and metformin can prevent the absorption of vitamin B12. Megaloblastic anemia from these agents is extremely uncommon because of how little B12 the body needs and how much of it is present in most diets.
