Used primarily in scientific research to study serotonin receptors, particularly the 5-HT3 receptor subtype. It acts as a selective agonist, helping investigators understand receptor function and related physiological responses. Commonly employed in pharmacological studies involving neurotransmission, gastrointestinal motility, and emesis (vomiting) reflex pathways. Due to its ability to stimulate sensory neurons, it is also utilized in experiments assessing pain perception and neurogenic inflammation. Not used in clinical medicine but valued in laboratory settings for probing neural and enteric nervous system activity.