My eyes have been opened to a whole new way of thinking and eating. I went from wearing size 44 jeans to size 32 and a 3xl shirt to a medium. A lot of literature on the subject says it's fine for a type 2 diabetic but not type 1. The only drawback is that insulin activity is reduced under ketosis. I've been working on this diet for a couple of days now, and I've found that the majority of my carbs are in the form of dietary fibers.
So, my Top Secret Garcinia experience was neither super impressive, nor super disappointing. I did like that there were no jitters and no feelings of nausea (some of the other brands, like Simply Garcinia left me feeling a bit woozy on an empty stomach). The weight loss with Top Secret Nutrition was eh, average, but again, if you have a sensitive stomach, it's a pretty decent trade off.