Guava is a tropical fruit, little known in our country, but that is starting to take place on the table of many European countries. It tastes sweet, but a little sour, for the low amount of body acids it contains. Guava contains high amounts of lycopene, an antioxidant that fights prostate cancer. This tropical fruit like no other plant production includes in its composition and ingredients of tomato and lime. In fact, 1 cup guava juice from the fruit contains 688 mg of potassium, an amount that could be found in a banana.