We prepare our Chaparral Extract from the dried leaf & flowers of Larrea tridentata shrubs which are Sustainably Wildcrafted in their wild native habitat in the deserts of southwestern America. Seek expert medical advice before taking during pregnancy. Not for use if you have or have had kidney or liver disease. Discontinue use if nausea, fever, fatigue or jaundice occur (e.g., dark urine or yellow discoloration of eyes).