The guifenesin really does miraculous things for the CM!!! HOWEVER the taste is abominable SOOOOOOO, a little trick that works wonders....

Suck on ice cubes before you take it. The ice numbs the taste buds and the guifenesen then has no taste. Chase with some nice cold water and you're done.

PS. this works great when you are trying to give yucky meds to little kids.