The doctor gave me several packets of the Nestle/Resource Thicken Up Clear and it seems like a good product, but expensive. We would have to use 16 packets a day or 16 scoops from the can. If my math is correct, the 4.4 oz can would last about 5 1/2 days at about $12-$13 a can. So that's about $68 per month.
I've heard that Thick It is ok, but separates and leaves chunks at the bottom. I also heard it doesn't hold up in the refrigerator.
I don't really know much about other products. I would love suggestions. My grandma is suppose to thicken her beverages to nectar like consistency. I usually give her Crystal Light drinks, V8, V8 Splash, and Propel (it's like Gatorade).