Citric acid / magnesium oxide / sodium picosulfate
"It worked, but it caused me to pass out. 



I took this as instructed - 1 dose at 4pm and another at 8pm. My doctor's instructions were to drink 2 16 oz glasses of water/beverage or more after the 4pm dose, and that liquids could continue to be consumed after the second dose until Midnight. I drank some herbal tea.



Things went fine after the first dose, and it seemed gentle enough. I went to the restroom several times and things seemed to be moving along. I took the second dose and by 10pm thought I was done. I woke up at 12:30am with stomach cramps and a pounding headache. I had watery diarrhea and became very dizzy. I stood up and passed out, hitting my head."