When I was about 10, my digestive system just kinda halted. Doctors didn't know why; I didn't know why. It never happened before or since. But, they had me chug like a bottle of this stuff every day. Back then, (at least where we got it), it didn't even have the lemon flavor.
Oh who can remember. Several days at least. Basically until I had a bowel movement. They had given me a threshold of "if you don't go by this date come back" or something. That wasn't needed, that's all I remember.