Vanda Pharmaceuticals Inc. (Vanda) (NASDAQ:VNDA) today announced the initiation of Thetis, a clinical trial evaluating NEREUS™ (tradipitant) for the prevention of vomiting in patients receiving glucagon-like peptide-1 (GLP-1) receptor agonist therapies. NEREUS™ was recently approved for the prevention of vomiting induced by motion.1

GLP-1 receptor agonists, including semaglutide and tirzepatide, have transformed the treatment of type 2 diabetes and obesity. However, gastrointestinal side effects, particularly nausea and vomiting, remain a significant challenge for many patients and are a leading cause of treatment discontinuation or dose reduction. Recent studies and approvals in the GLP-1 space further underscore this. Last month, a "high dose" of Wegovy was approved by the U.S. Food and Drug Administration (FDA) on the basis of providing additional weight-loss benefits, yet it comes with the tradeoff that the top two reported adverse effects of nausea and vomiting for this high dose are of increased frequency compared to the previously approved Wegovy maximum dose.2