Nettle tea is an herbal infusion made by steeping the leaves of the stinging nettle, Urtica dioica, in hot water. The plant loses its sting when dried or heated, yielding a dark, earthy, slightly grassy drink long used in European folk medicine as a spring tonic and supposed cleanser of the blood. Nettles are genuinely nutritious for a leafy plant, containing vitamin C, iron, calcium, and carotenoids, though only modest amounts transfer into the infusion. Commercial nettle tea is sold loose or in bags, sometimes blended with mint or lemongrass. People taking diuretics, blood pressure medication, or diabetes drugs should check with a clinician first, since nettle can interact with these medicines, and the traditional “detox” claims have little clinical support.