Traditional Uses: Traditionally used in European, Native American, and Ayurvedic folk medicine for centuries to treat colds, flu, feverish conditions, and as a diuretic, laxative, and astringent.
Potential Benefits: May reduce the duration and severity of cold and flu symptoms by approximately 1–2 days, supported by multiple randomized controlled trials; exhibits antiviral, antioxidant, and anti-inflammatory properties, primarily due to anthocyanins.
Warnings: Raw or unripe berries, leaves, stems, and bark contain toxic cyanogenic glycosides (sambunigrin) that can cause severe nausea, vomiting, and diarrhea—cooking eliminates this toxin; avoid during pregnancy and breastfeeding due to insufficient safety data; use cautiously with immunosuppressants and diabetes medications; may trigger allergic reactions in sensitive individuals.
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