Health Benefits of Elderberry is antiviral. “It loosens mucus, making it easier to cough and preventing [an upper-respiratory virus] from turning into pneumonia or bronchitis.”
A 2019 study on elderberry for both cold and flu suggested that the fruit substantially reduced upper-airway symptoms. Many of elderberry's health benefits can be attributed to anthocyanin. As an antioxidant, anthocyanin works by clearing the body of free radicals that damage cells at the DNA level. It also has antiviral properties that may prevent or reduce the severity of certain common infections.