Is It Really A Scam?

On New Years eve, my family and I attended a birthday dinner of our friend. I bought a gift for her which she really like. She loves the scarf as well as the color of it. Hubby on the other hand gave his old leather jacket to her husband for it fits him and hubby couldn't wear it anymore for it is too small for him already. Our friend on the other hand loss weight dramatically, thus making the jacket fits him perfectly. He mentioned to us that he is trying to lose weight by eating less carbs and more veggies and fruits. He gets exercise from his work by loading and unloading trucks with heavy boxes. He never mentioned anything about the diet pill called apidexin. Could it be because he learned about apidexin scam? If that is the true, why is it that this diet pill is still on the market?