What medicine takes when having loose motions?

Diarrhea: When you say "loose motions", i think diarrhea or loose, frequent bowel movements. If that's the case, you want to first be sure that you don't see any blood in the stool, that you don't have fever/sweats/chills, or abdominal pain out of the ordinary. Black tarry stools are also a bad sign, too. Your pharmacist can point you to many over-the-counter anti-diarrhea treatments.