Sambucol Extra Strong liquid is a dietary supplement intended for adults. It was produced on the basis of elderberry juice. Its use is worth considering especially in autumn and winter. What are the active ingredients of Sambucol Extra Strong? Sambucol liquid product contains 8 active ingredients: black lilac, vitamin D, vitamin C, vitamin B6, folic acid, zinc, copper, selenium. The black elder, or Sambucus nigra L., is a plant known and appreciated for its properties. To preserve its beneficial properties, it must be processed with great skill and served in an appropriate form. Elderberry, vitamin C, zinc, copper, selenium, vitamin B6, folic acid and vitamin D help the immune system function properly. Copper and vitamin B6 contribute to maintaining proper energy metabolism. Selenium, copper, vitamin C and zinc play a role in protecting cells against oxidative stress. In addition, vitamin D, folic acid and zinc are involved in the process of cell division.