For those of us with short bowel or other water absorption issues, I heard of another ORS option, Liquid IV. It's available at some CVS stores (US) and it's also available from Amazon.
I've been trying the Drip Drop product just before I go to bed. So far, it's reduced my water input by 500ml a night. I haven't tried it during the day, so I don't know how well it works when food is involved.
I'm going to use the same test for Liquid IV and see how it works.
I got the berry flavored Drip Drop. It takes two packets to make a 500ml bottle. The taste isn't that bad, but I wouldn't drink it for the taste.
I got the lemon-lime flavored Liquid IV. It takes only one packet to make a 500 ml bottle. I'll provide a review of the taste after I've tried it a few times.
BTW from previous posts, I tried Diet Dr. Pepper (man cannot live by water alone) and it actually tastes pretty close to the regular, and there's hardly an aftertaste.