Magnesium citrate
"After a week of sharp pain in my right lower abdomen progressively getting worse I ended up in the ER. I thought I had an ovarian cyst. The doctor ordered tests to rule out kidney stones or appendicitis. I was diagnosed with impacted bowel! I had been going regularly so it was a surprise although I do take Norco regularly for back pain. Apparently I had a ball of stool stuck somewhere higher up.
     I was sent home with a bottle of MC and drank half the bottle as recommended with plenty of water around midnight. I didn't sleep well from the pain and had a decent BM at 6 AM. Then nothing and still in pain. 
      It is now 7:30 AM and I decided to drink the other half in hopes that this will pass."