Stinging nettle root is the underground portion of the nettle plant. Unlike the leaf, it has a traditional reputation for prostate and urinary comfort. The root is usually processed into an extract because its active compounds differ from those in the leaves.
People take nettle root to maintain normal urinary flow and prostate health. The evidence for these uses is limited and not yet conclusive. Doses depend on the strength of the extract and are typically taken with a meal to improve absorption.
Caution: Nettle root may interact with blood thinners like warfarin, blood pressure medications, and diuretics. Avoid it during pregnancy. Anyone with a kidney condition should check with a healthcare professional before use.