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…