From the Manufacturer's Label:
Supports Prostate Health**
Stinging Nettle has been used according to tradition, since the days of Caesar 2,000 years ago. NOW® Stinging Nettle Root is concentrated and standardized to the highest European standards, where it has been researched and widely used.
Manufactured by NOW® Foods.Contains no sugar, salt, yeast, wheat, gluten, corn, soy, milk, egg, shellfish or preservatives.