geoboy said:
the Guifenesin is to negate the energizing effect of the ephedrine. still get the thermogenic effect, but not the 'speed' effect. I also read somewhere that the guifenesin is added to frustrate the amateur chemists who make meth out of pure ephedrine (which is probably a co-reason why gov so hot to ban ephedrine).
ephedrine with guifenesin sucks moose cock.
I can't find anyhthing stating that guifennesis has any sedative properities. All I can find is its a decongestiont w/o any sides.