All American Keto – All American Keto Any supplement that can do one or more of these things safely can be helpful in losing weight. The problem is: how can you tell if a particular dietary supplement works as advertised? This is an area where it’s really important to remember: if it sounds too good to be true, it probably isn’t. There are supplements that work and are safe, but it is important to do your research. Don’t believe everything you read, especially on the Internet!