Mountain Ash (Sorbus aucuparia), which yields rowan berries, is rich in vitamin C, organic acids (like sorbic acid), condensed tannins, and flavonoids. In traditional European medicine, rowan berries serve as an excellent mild astringent and urinary antiseptic. The sorbic acid and tannins exert powerful antimicrobial and tissue-toning actions that soothe throat inflammation, bleeding gums, and mild loose stools.
Educational information only — never stop or change a prescribed medication without talking to your prescriber first.
CRITICAL: Raw, fresh rowan berries contain parasorbic acid, which can cause severe stomach irritation, nausea, and vomiting; only use rowan berries that have been thoroughly dried, cooked, or boiled, which converts parasorbic acid into harmless sorbic acid. Avoid during pregnancy.
Evidence level: Moderate
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