Elderberry (Sambucus nigra and Sambucus canadensis) is widely recognized for its high nutrient density and potential health-boosting properties, particularly for the immune system. The dark-violet berries are rich in antioxidants, specifically anthocyanins, which are known to reduce inflammation and oxidative stress. 
Immune System Support: Elderberry is most commonly used to boost the immune system and help ward off infections. It is known to increase the production of white blood cells and modulate immune responses.
Cold and Flu Relief: Studies indicate that elderberry can reduce the severity and duration of influenza and cold symptoms, such as fever, headache, and sore throat. It appears most effective when taken within 24 to 48 hours after symptoms begin.
High Antioxidant Content: Elderberries are among the highest antioxidant-producing fruits, containing more than double the anthocyanins of blueberries. These antioxidants protect cells from damage and combat oxidative stress.