Features of NutraBio Milk Thistle (European) Promotes Healthy Liver Function HPLC Standardized Extract - Standardized to 80% silymarin by HPLC. Made in the USA to Strict FDA Standards in our own cGMP Certified Laboratory. Independent Lab HPLC Tested in insure 100% Label Claim and Potency. Milk Thistle supports healthy liver function and has powerful antioxidant benefits that may help fight cell-damaging free radicals in the body.* Milk thistle contains a flavonoid complex known as silymarin which promotes liver detoxification and waste elimination.* NutraBio's milk thistle is standardized through HPLC to 80% silymarin, the highest potency available.