Amygdalin is a naturally occurring chemical compound best known for being falsely promoted as a cancer cure. It is found in many plants, but most notably in the seeds (kernels) of apricots, bitter almonds, apples, peaches, and plums. While most of the research on laetrile focuses on its effects on cancer, some studies have found that amygdalin, the natural form of laetrile, may have other health benefits. It may lower blood pressure: In one study, amygdalin helped lower systolic blood pressure (upper value) by 28.5% and diastolic blood pressure (lower value) by 25%. These effects were enhanced when taken with vitamin C. It may relieve pain: Several animal studies show that amygdalin may help relieve pain caused by inflammatory conditions, such as arthritis. However, there is a lack of human-based evidence in this area. It may boost immunity: A test-tube study found that amygdalin improved the ability of immune cells to adhere to prostate cancer cells.