Why don’t I get a potion shot for my neck and someone else does? The potion used for the back of the neck is methylcobalamin, a nerve-nourishing potion that is a vitamin B12 type of drug. The point used is the finish bone point, a common point for treating ear and facial diseases. This point is less painful and has more muscles, which is better for the absorption of drugs, and according to my clinical experience, it can be used for people who have problems with the nerves in their ears.