NOW Foods Milk Thistle Herbal Extract provides 300 mg of milk thistle extract per serving in 100 vegetarian capsules. Milk thistle is one of the most researched herbs for liver support, with a history of use dating back thousands of years. The active compounds in milk thistle, particularly silymarin, are concentrated in the seeds and have antioxidant properties. This extract offers a potent source of these beneficial compounds in convenient capsule form. The vegetarian capsules make this product suitable for various dietary preferences. Milk thistle is commonly used to support liver detoxification and overall hepatic health.