A small, randomized, double-blind, placebo-controlled trial of treatment of influenza with elderberry extract.
Elderberry extract shortened the duration of influenza by 4 days compared to placebo. [1], [2], [3], [4].
For comparison, Tamiflu shortens influenza by 17 hours, at the same time increasing the risk of psychiatric complications and renal insufficiency. However, governments spend millions of dollars to stock up on Tamiflu, and nobody is stocking up on elderberry.