Does the over the counter supplement Milk Thistle really promote healthy liver function or is that a myth?

ABSOLUTELY!!! I was on a lot of pain pills and tylenol 3(which is one of the worst meds on your liver) for over five years and drank like a fish for way too many years. Due to my mother I have taken Milk Thistle for many years. About 3 months after I was off of my pain meds the dr.s checked my liver due to all of the pills I was taking and they themselves could not believe how my liver was in such good shape.