Complementary Medicine for Treating or Preventing Influenza or Influenza-like Illness.

Am J Med, 2007
https://pubmed.ncbi.nlm.nih.gov/17976414/
- This paper examined four herbal and/or homeopathic remedies, one of which was elderberry.
· This paper is older so it only included 2 clinical trials. From this, the authors concluded there was not compelling evidence for benefit of homeopathy. However, the two studies that were cited both showed a positive effect of elderberry, and more studies have been done since then.