Instant knockout is a fat burning supplement containing 10 powerful, natural fat burners helping you burn your body fat just like the professionals. we know for a fact that not all ingredients in the formula help burn fat. Instant knockout is a fat burning supplement containing 10 powerful, natural fat burners helping you burn your body fat just like the professionals. we know for a fact that not all ingredients in the formula help burn fat. instant knockout best appetite suppressant & weight loss supplement