Herb Pharm Jamaican Dogwood Liquid Herbal Extract: Liquid Herbal Extract. Piscidia Erythrina. Root Bark. We prepare our Jamaican Dogwood extract from the root bark of Piscidia erythrina tree which is Custom Wildcrafted especially for us in its wild native habitat in the mountains of Jamaica and is never fumigated or irradiated. To assure optimal extraction of Jamaican Dogwoods bioactive compounds the bark is hand-harvested and carefully sun-dried and is then air-expressed directly to our laboratory and promptly extracted. Disclaimer: These statements have not been evaluated by the FDA. These products are not intended to diagnose treat cure or prevent any disease. Shake well before using. Two to four times per day take 20 to 40 drops in a little water. Ingredients: Certified organic grain alcohol distilled water and jamaican dogwood extract. Warnings: Seek expert medical advice before taking during pregnancy or nursing.