I´d like to know about Dextrose as well.
25 years of working out I´ve never done weight gainer...ie Dextrose or other sugar/carb.
However after some reading, I recently just added 80g Dextrose to my Post Workout shake. Before only protein.
I really don´t see/feel the advantage. All that happens is I have a major sugar crash 1 hr later and nap 1/2 hr on the couch.

Sorry chi...on subject, right? :-))