On the other hand, as we have seen, there actually is no best supplement for weight loss. Their blood sugar could drop and they wouldn't even know it. They all can be beneficial, but there is only one true best weight loss supplement. A diet pill is a okinawa flat belly tonic that claims to help you lose weight, feel fit, boost your energy, and burn fat. I had read an advertisement about a supplement that was going to burn my fat off while I slept.