Ondansetron (Zofran)

Ondansetron 4mg Tablets Ondansetron is a fast-acting prescription medication used to prevent and relieve nausea and vomiting by selectively blocking serotonin (5-HT3) receptors involved in the body’s emetic response. By targeting the nausea pathway directly, it provides effective relief without sedation or central nervous system suppression.

In optimization and metabolic-therapy contexts, ondansetron is commonly prescribed to support tolerance and adherence when starting medications known to cause gastrointestinal side effects, including GLP-1 therapies such as semaglutide or tirzepatide.