Soursop may be beneficial for people with high blood pressure, as it contains potassium and antioxidants that can help regulate blood pressure and prevent hypertension. Potassium is a mineral that helps balance the sodium levels in your body and relaxes your blood vessels, which can lower your blood pressure. Antioxidants are compounds that help protect your cells from oxidative stress and inflammation, which can damage your blood vessels and increase your blood pressure. A 3.5-ounce (100-gram) serving of raw soursop provides 278 milligrams of potassium, which is 6% of the RDI.