Getting small children to take Algin...good question. You could try putting it into very small capsules, like Carla mentioned. Or you could open up the capsule and mix a small amount into applesauce, etc. The gel-like properties of Algin mean that it will definitely thicken anything liquid it comes into contact with. You might not be able to use much because it really does thicken very easily. Maybe mixing it into juice would be better, hence turning the juice into a sauce? I guess you'd just have to experiment a little. Wish I could be of more help with this one.

Because Algin thickens so much, I wouldn't suggest trying to take the powder loose and drink it down. I tried this with a whole capsule and trust me, it doesn't work. (Although I've never tried a very small amount.)