hiya, im going to pull my "im a pharmacist" line just about now, and say that i did learn about saw palmetto, liver thistle, and reams of other alternative therapies.
i have said over and over that imo the way to protect your liver is to remove whatever is insulting your liver (the drug) and to keep it well hydrated, and supplied with appropriate substrates (good clean diet, vitamins etc...the usual)
there are many people out there who think that milk thistle and the like are a mithril vest against liver damage. they arent. im not saying that they are useless, but the studies i have seen are not convincing, imo. many are paid for by the sellers of the herbs, on limited population groups, with some shoddy study protocols.
anyway