Elderberry is used for the common cold, "the flu" (influenza), and H1N1 "swine" flu. It is also used for HIV/AIDS and boosting the immune system. Elderberry is also used for sinus pain, back and leg pain (sciatica), nerve pain (neuralgia), and chronic fatigue syndrome (CFS).
Some people use elderberry for hay fever (allergic rhinitis), cancer, as a laxative for constipation, to increase urine flow, and to cause sweating.
It is used for heart disease, high cholesterol, headache, toothache, and weight loss.