I am also wondering again if this would be of help to the kidneys while doing the LF's. I am diabetic. Have used the tincture from Tropical Traditions before and didn't see that it reduced my blood Sugar that much. Maybe I needed a Liver-Flush and that is why. I didn't know about LF's at that time. I wonder if the tincture could be substituted for the tea. I suppose, but wonder how much. I found a site--customer service--info@bulkbanaba.com that is located in the Philippines. Alpine Dynamics International, Inc. They sell the leaves. Looks like a reputable source.