Ugli contains about forty five calories in a particular serving of the fruit. The similar serving also provides a gram of protein. A serving of ugli fruit has about 2 grams of fiber which is good for digestion. The vitamin intake is so beneficial for the body that it helps prevent wounds from not healing properly. The nutrients such as calcium, vitamins and proteins can be effectively obtained from ugli by dodging the excess fat and cholesterol content that may create problems in later stages.