Choline is a water-soluble essential nutrient. It is usually grouped within the B-complex vitamins. Choline generally refers to the various quaternary ammonium salts containing the N,N,N-trimethylethanolammonium cation. (X− on the right denotes an undefined counteranion).Source: Wikipedia
Patients are most commonly prescribed choline salicylate to treat breast cancer, blastomycosis, pick disease, and rabies.