The nettle leaf from Oregon's Wild harvest is the best. I have bought it from Azure for several years, but they frequently are sold out. I have tried the nettle leaf from frontier that is imported from Bulgaria and found that I have to use twice as much to get the same effect. My doctor has told me to continue to use nettle leaf to help with my arthritis pain in my hands as it has helped tremendously for many years (close to 10). I am so happy to have found you to order from directly. I use it as a tea.