For thousands of years‚ milk thistle has been used for its many potential health benefits. Also known as Silybum marianum‚ it has been used in traditional medicine to support kidney‚ gallbladder‚ and liver health. We now know that milk thistle contains a group of flavonoids called silymarin. Flavonoids are antioxidants that can help your body fight off the effects of disease‚ free radicals‚ and illness; free radicals can harm your cells‚ potentially causing sickness or discomfort. Silymarin—which is made up of silibinin‚ silidianin‚ and silicristin—has both anti-inflammatory and antioxidant properties‚ making it a powerful compound.