Magnesium sulfate / potassium sulfate / sodium sulfate
bowel preparation
"Blecchh!  Effective but tasted like pure cough syrup.  I drank half of the mixture through a straw, followed by a ginger ale chaser, then did the second half the same way.  I didn't throw up though and it did it's job but the company needs to come up with something better.
Also expensive and not covered by my insurance."