Diarsec 2 mg Tablet is used to treat diarrhea. It should not be used on people who have dysentery (bloody diarrhea). Diarrhea is defined as an increase in the frequency of bowel motions or loose, watery bowel movements. This medication can treat frequent loose motions while also helping you stay healthy by preventing them from recurring. To get the most out of this drug, take it on a regular basis and drink enough of water to stay hydrated.