Supplements aren't regulated and they can claim anything. The ingredients are not even accurate on many of the labels. Most have a distributed by on the label but that doesn't tell you where it was made. Most of the clinical studies that they all seem to print in their advertisements is a scam.
If you want to take care of your liver don't take steroids, limit your alcohol and stay lean to keep visceral fat away. Drinking cucumber juice with vitamin C, B1 and other crap is doing nothing for your liver.