Elderberry for prevention and treatment of viral respiratory illnesses: a systematic review.
L Susan WielandVanessa PiechottaTermeh FeinbergEmilie LudemanBrian HuttonSalmaan KanjiDugald SeelyChantelle GarrittyPublished in: BMC complementary medicine and therapies (2021)
Elderberry may be a safe option for treating viral respiratory illness, and there is no evidence that it overstimulates the immune system. However, the evidence on both benefits and harms is uncertain and information from recent and ongoing studies is necessary to make firm conclusions.