Today I took a glycerin enema. I added 80ml of glycerin to 2 liters of water. I could easily hold it for 15 minutes, then had a thorough evacuation. One hour later I had to go again, and maybe one or two cups of brown water came out. This happened 2 more times with decreasing amounts of water. Did I put too much glycerin, or are those repeated trips common when taking glycerin enemas?