What are 5ht3 agonists used for?

Agonists?: You may mean antagonists, the paradigmatic one being zofran, also known as ondansetron. This treats nausea. I am not familiar with agonists to this receptor being used in the clinical arena. Stay safe!

See below: This is a very complicated and still not settled topic. I will refer you to a review of these receptors including their antagonist and their agonists. Best wishes. www.ncbi.nlm.nih.gov/pmc/articles/pmc2664614 keywords: serotonin receptor, ligand-gated ion channel, 5-ht 3 receptor, ligand binding, antagonist, agonist, pharmacology, disease. It is thought that these agonists attenuate the effect of serotonin at the receptor site.