I am not going to pretend that I know more than I do, but all the indications are that SN is very soluble in water. Just swirl it around with a spoon in the water and drink whilst it is still in suspension. If there were to be any residue in the glass after drinking it down, just swish a little bit more water in the glass and drink it down.
15 gm seems to be the recommended dose, for all body weights (do we all agree ?) My SN is in a sealed foil package, and I do not want to open it until I use it, to maintain full potency. However, I have weighed out 15 gm of table salt to give myself an idea of the probable volume of SN that I will have to cope with. No great surprise, but I anticipate the SN being more coarsely ground, and consequently occupying a greater volume.
Has anybody ever discussed the question of whether you should just try and knock it back quickly, in one big gulp, or can/should it be taken in several smaller sips, maybe over a few minutes ?