Fat loss opinion about a product

hello, I'm 45 and still pumping for times a week. I'm going in vacation in 4 weeks. I want to try a product call AllMax Rapide cuts to get my habs more definite. I'have cut all the corner with nutrition and i'm doing 40 minutes of cardio without food in the morning. (4 times a week.) I take Bcaa and glutamine to avoid mucle loss just before and after cardio, but I still have problem to get ride of the front part of my belly. I'have heard good review of this product but in the description they talk about playing with my production of insuline. I'have heard it's not good to play with the production of insuline... Any comment or opinion with this product?
Thanks.
Api
(sorry with my english writing...usualy speak and writh french.)