how to inject b12 shots in your abdomen Choosing the Right Needle and Syringe for Injections: A Complete Guide where to inject lipotropic b12
Description
A deficiency in folic acid can cause a variety of hematologic complications including megaloblastic and macrocytic anemias

It is also used to treat pernicious anemia, vitamin B 12 deficiency (due to low intake from food or inability to absorb due to genetic or other factors), thyrotoxicosis, hemorrhage, malignancy, liver disease and kidney disease

This means the B12 is not free to bind with other glycoproteins and move through the GI tract for absorption
10.1136/bmj.l4898 55 TanakaN.YamazakiY.YamadaH