Enables neurotransmitter transmembrane transporter activity and quaternary ammonium group transmembrane transporter activity. Involved in dopamine transport; histamine transport; and serotonin transport. Acts upstream of or within several processes, including cation transport; quaternary ammonium group transport; and regulation of appetite. Located in neuronal cell body. Is expressed in several structures, including brain; dermis; extraembryonic component; genitourinary system; and thymus primordium. Orthologous to human SLC22A3 (solute carrier family 22 member 3). [provided by Alliance of Genome Resources, Apr 2022]