Q is do they work?
Coffee may have some good effects on liver function.
Milk thistle is commonly taken , and recommended; source of chemical-silymarin. In studies, IV silymarin, in high doses, can have benefit in a variety of liver issues; safety-?; unavailable in us. Milk thistle by mouth does not supply a very large amt, is not well absorbed by the gut; reasonably nontoxic. None have proven efficacy.