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Is it safe to take multivitamin that contains elderberry if one has a trace of the coronavirus?

In a laboratory setting, elderberry extract has been shown to have possible effects against some viruses. However, no large studies have proven its effectiveness in humans when sick. Cooked elderberry fruit is safe, but raw elderberry may cause nausea, vomiting, or severe diarrhea.

Answered by Dr. Molly Fleece, MD.