It's treated liver disorders for thousands of years
Any time "the eyes and skin turneth yellow" on someone, the ancients turned to milk thistle. They also only lived like 40 years and thought leeches were a great way to prevent illness. So you should still probably call a doctor if you turneth yellow, but it's good to know milk thistle has been on the map for liver damage since forever.
It retards the progression of alcohol-induced hepatic fibrosis in baboons
So yeah. Cool.
Where can I get milk thistle, and is it safe to take?
You can find dry powdered milk thistle capsules in the vitamins and supplements aisle at pretty much any drugstore, though it's also available in tincture or liquid form. Watch out if you're allergic to ragweed, chrysanthemums, marigolds, chamomile, yarrow, or daisies, because you may also react to milk thistle.