In his Massive Eating II article, John Berardi mentions using a glucose meter and a glucose drink to test how insulin sensitive you are. I'd like to perform this test so I can know whether I should possibly lower my carbohyrdate intake or increase it.
The problem is, every pharmacy I have gone to has been at a loss for words as to what the hell a "glucose drink" is. I've been able to find "glucose tablets" but no such drink. What exactly is this stuff and where can I find it?