Lactulose
"So I am a new nurse but have overcome a lot of health problems. Due to wearing a girdle to support my large hernia and lack of water from rushing around the ER, I became suddenly constipated. For three weeks it was wait until my days off and stay in the bathroom in agony. So I went to my doctor and they gave me this, it was actually sweet! I took a shower and by the time I was done so was my problem! I am amazed and my IBS even seems to be calming down!"