Cilansetron

Cilansetron is an experimental drug that is a 5-HT3 antagonist under development by Solvay Pharmaceuticals.[1][2][3] 5-HT3 receptors are responsible for causing many things from nausea to excess bowel movements. In conditions such as irritable bowel syndrome (IBS), the receptors have become faulty or oversensitive. 5-HT3 antagonists work by blocking the nervous and chemical signals from reaching these receptors. Studies have shown that the drug ... [wikipedia]