The berries from the elder contain a considerable amount of vitamins A, B and C, as well as flavonoids, sugar, tannins, carotenoids and amino acids. Warm elderberry wine is a remedy for sore throat, influenza and induces perspiration to reverse the effects of a chill. The juice from the berries is an old fashioned cure for colds, and is also said to relieve asthma and bronchitis. Infusions of the fruit are beneficial for nerve disorders, back pain, and have been used to reduce inflammation of the urinary tract and bladder. Raw berries have laxative and diuretic properties, however the seeds are toxic and may induce vomiting and nausea.
Elderberries are edible when cooked.
Elder leaves contain the flavonoids rutin and quercertin, alkaloids, vitamin C and sambunigrin, a cyanogenic glucoside. Fresh elder leaves also contain hydrocyanic acid, cane sugar, invertin, betulin, free fatty acids, and a considerable quantity of potassium nitrate. Elder flowers and elder flower water have been used in a variety of ways topically and as a tonic mixture. Elder flowers are a mild astringent and are used in skin washes to refine the complexion and help relieve eczema, acne and psoriasis. Flower water makes a soothing gargle and when strained makes an excellent eye wash.