I used to be able to find Oregon's Wild Harvest supplements on Amazon. Then I started to use Non-GMO that I could find on that site due to my being rural. However , even being non-GMO and organic they did not work in the same way. So I went directly to the source and I am so glad I did. I even gave some to my plants and they love them too. I wish I had taken a before and after to show you how they are greening in gracefully perfect ways. Best supplements grown in the USA, in my opinion.