Hi. The first day I was gagging and almost threw up, so didn't get it all down. I have found for myself that the water needs to be warm and I drink it thru a straw. The second and third day were much easier and I got all of it down. Take small drinks. It is when you drink it too fast that it wants to come back up I think. It takes me about 20 minutes to drink it all.
Hope this helps
new at this