Soursop (the fruit and the leaves) contains many other antioxidants, including phytosterols, tannins, and flavonoids. Antioxidants are important for overall health and may help protect against a variety of health conditions.  In traditional medicine and herbal practices, soursop leaves are often used to boost immunity and digestive and skin health. Some cultures believe that these leaves may have properties that support immune function and overall well-being. Common uses include making teas, infusions, or extracts from the leaves.  Approximately 50 leaves - To brew some tea, boil 2-3 leaves per 8 ounces of water. for 5 - 10 minutes.