Elderberry comes from the dark purple berries of the Sambucus nigra plant. You'll find it as syrups, extracts, capsules, and gummies. People take it to help the immune system, especially during cold and flu season.
Many take it at the first sign of a cold or as a daily immune boost. You can get it as syrup, juice concentrate, or a standardized extract like ElderMune. Doses differ by product, so follow the label.
Elderberry may interact with immunosuppressants. Safety during pregnancy, breastfeeding, or with autoimmune conditions isn't clear. Talk to a doctor before using it.