Be Slim Fast is a food supplement that contains a composition of plant extracts from: green coffee, bitter orange, green tea, nettle, cayenne pepper and coffee. The formula has been further supplemented with Citroxin™, which is a combination of grapefruit, bitter orange and guarana extracts. Know the ingredients of Be Slim Fast tablets Bitter orange contributes to the correct metabolism of lipids and carbohydrates. Guarana is traditionally used to control proper body weight because it helps maintain fat metabolism. The Be Slim Fast pack contains 60 film-coated tablets, which are enough for 30 days of daily dietary supplementation for an adult.