Barberry Root & Bark (Berberis Vulgaris) Extract Powder Concentrate is a safe and effective herb that may help to increase energy levels and improve immune system function. Barberry functions with the component Berberine that may also assist with digestion system processes. This is the highest quality Barberry Root & Bark Extract Powder (4:1 Concentration) available on the market in raw, powder form. This ingredient may be added to foods and beverages or smoothies and green drinks. It is a yellowish-to-orange powder. PFL Non-GMO Pesticide Free powder extracts are not ETO Treated or Gamma Irradiated. Some typically gummy, oily or damp extracts require an anti-caking agent to maintain its powder form. Non-GMO and/or Organic Tapioca maltodextrins are typically used, in as small amounts as possible. If used, PFL will list it on our label. Most extracts require its use, whether other suppliers disclose it or not. Review the safety article at Prescribed For Life for more information.