Stinging nettle extract comes as a concentrated form, often standardized for active compounds like beta-sitosterol. Root extract is taken for prostate and urinary comfort, while leaf extract is used for joint relief and seasonal allergy support. However, the evidence for allergies is stronger with freeze-dried leaf.
People typically take capsules or liquid drops one to three times daily. Taking it with food can reduce stomach upset. The extract offers more consistent dosing than raw leaf.
Nettle extract can lower blood sugar. It may interact with diabetes medications, diuretics, and blood pressure drugs. Avoid using it if you have kidney disease or fluid retention from kidney issues. Do not take it during pregnancy or while breastfeeding. Talk to a doctor before combining it with other supplements or medications.