Black Alder
Alnus glutinosa
Scientific Summary
Black Alder (Alnus glutinosa) is a deciduous tree whose bark and root are harvested for herbal use. Its bark is traditionally applied to minor skin irritations, wounds, and as a mild anti‑inflammatory and diuretic; it also contains compounds with antimicrobial activity. When taken by mouth, it can cause mild stomach upset and may interact with blood‑thinning medications, so use in large amounts or over long periods without medical advice is cautioned.
Source: PMC: Aloe Ferox, PMC: Black Seed / Nigella, WHO Monographs on Selected Medicinal Plants (Vols 1-3)
