Investigations show that elderberry anthocyanins enhance immune function by boosting the production of cytokines, which help regulate immune response. This extract also provides ample antioxidant properties. Rich in anthocyanins, elderberry may even have more antioxidant capacity than vitamin E or vitamin C, making it an essential supplement. In some cases, elderberry extract has even been known to reduce oxidation of the low-density lipoprotein (LDL) cholesterol.