Caffeine-Free Origin: Europe A 100% pure extract of milk thistle seed extract standardized to 80% silymarin (the active compound) Milk thistle seed has been used for thousands of years to improve many aspects of health. Milk thistle contains silymarin, which has powerful antioxidant and anti-inflammatory benefits especially for the liver and heart. Our milk thistle is freshly ground for maximum absorption by the digestive system. How to Brew Mix half teaspoon with warm water, milk, smoothies etc. or sprinkle on yoghurt, oats etc. Taken 1 to 3 times daily.