I've been adding in Alpha Lipoic Acid with the Milk Thistle. There's to many good reports about it to ignore.
An excerpt from the Men's Health Journal:
1. Drop alpha-lipoic acid. It's not a hallucinogen; it's an antioxidant that turns up the production of glutathione, your liver's head janitor. Glutathione latches on to toxic gunk and makes it water-soluble enough to be flushed out through your kidneys. "We give patients who overdose on Tylenol a drug that stimulates glutathione production. It's the quickest way to rid the liver of toxins," says Savant Mehta, MD, director of the liver-transplant program at the University of Massachusetts. For maximum liver scrubbing, take a 50-milligram alpha-lipoic acid tablet (sold in drugstores) twice a day.
* 2. Swallow some milk thistle. Popular in Germany -- a country that's tough on livers -- the herb milk thistle is loaded with the compound silymarin. One research review published in the American Journal of Gastroenterology concluded that silymarin may help heal liver damage caused by excessive alcohol consumption, infection with viral hepatitis, or exposure to certain toxic chemicals. "About half the patients in my clinic are taking it, but its efficacy remains to be proved," says Dr. Mehta. If you want to give it a try, check your local health-food store for Thisylin by Nature's Way ($23 for 60 capsules); it's the brand used in most clinical studies.
Here's another vote for ALA. Use up to a gram a day in divided doses. That should actually be enough liver protection for the small amount of juice you're using, but if you insist on milk thistle, another gram of that in divided doses certainly won't hurt, but it might not help either.