Elderflower contains powerful antioxidants and phytochemicals that help prevent free radical damage. The herb is comprised of several essential vitamins, including Vitamin A, the B-1, B-2, and B-3 complex, and Vitamin C. A combination of these vitamins and phytochemicals, like flavonoids and quercetin, give elderflower its anti-inflammatory, anticancer and antiviral properties. The herb is also an effective diuretic, laxative, and insect-repellent.As a detoxification aid, elderflower may enhance liver function by causing the body to sweat our liquids and eliminate metabolic waste. It may also help relieve allergies and asthma, along with treating fungal infections, rheumatism, toothaches and urinary tract disorders.