Pro Keto RX Hoodia Gordonii is an herb from a plant in South Africa that reduces appetite by mimicking the effect of feeling full after eating. This causes a person not to feel hungry, which makes him eat less without starving, which is very unhealthy. White Kidney Bean Powder is an herb that has undergone extensive research and testing and what it does is prevent the digestive process from converting starch to sugar, so it ingests less fat calories and your body eliminates the starch it doesn't need.