constipation
"Reading these reviews will make people anxious to try this medication. All I will say is to keep in mind most of these people are taking multiple pills at once (you should start with one then progress as needed) and/or they're not drinking enough water with the pill. You should drink about two glasses worth of water and keep drinking a full glass every hour or so. 

I take this medication because my meds give me constipation quite badly and the doctor said to drink a lot of water with it. Don't take anything that effects the stomach like Zantac or Prevacid for the first hour, so the bisacodyl isn't hindered by anything."