Guys, carb blockers have worked for me quite well. I've been using them for a year now. The reason that I believe they work... I have irritable bowel, and when I take carb blockers, it all but constipates me. That sounds gross, but it proves to me that the kidney bean extract is doing what they say it does. It is a fiber that supposedly binds the carbs and disallows them to break down into glucose. I also take a product that blocks sugar. The ingredient is "gymnema sylvester". This is a popular supplement with diabetics. I don't think many people who are diabetic doubt it's capability to lower blood sugar. Being close to diabetic (pre-diabetic syndrome), this is a great help to me. I lost 50 pounds over the last 4 years because I was on the edge of diabetes. now I am in shape and doing great.
As far as eating junk, yes, every now-and-then I will gorge out on pancakes or pizza and take 4 carb blockers. It binds me up and I drop bricks when it all gets through my system. Without the kidney bean extract, I'd shoot pizza out my rear end like a fire hose. So to all of those who don't believe, I'm not convinced that you know what you're talking about.
I recommend carb blockers to everyone. The worst they can do is bind up a portion of your carb calories. How bad can that be?