Milk thistle is good, though I wouldn't use Jarrow's. But a combination liver cleanse is better. There are many good ones. Bupleurum liver cleanse by Planetary Formulas is good, as is Enzymatic Therapy's milk thistle blend. For the chest symptoms, try Planetary Formula's mullein formula -- it should help clear the lungs a bit faster. Good luck.
Add more natural antioxidants. Apples, tomatoes and oranges are especially helpful in nourishing the lungs, Add carrots, yellow squash and dark, leafy greens for their lung-protective carotenoids, Drink plenty of water to help flush out toxins and keep nasal passages moist, Eat whole soy foods the phytoestrogens they contain may have cancer-protective effects throughout the body,Keep in mind that antioxidants and carotenoids from foods are your best source. While supplemental mixed carotenoids may offer some benefit, you should avoid taking isolated beta-carotene, especially if you are, or were, a smoker higher doses may actually increase the risk of lung cancer.
Buy Jarrow Formulas Milk Thistle it helps cleanse the liver