https://www.amazon.com/Calorie-Mate-Balanced-Chocolate-Ounce/dp/B000W9CNOK

I believe the ones in GLT are supposed to be these. I bought some several months ago, took ages to ship from Japan and came kinda crushed. Haven't tried them yet, wanted them more as a GLT-themed novelty. I see now they qualify for Prime 1-day, though, so maybe I'll order more and give them a shot.