If you mean a liver support supplement containing milk thistle, dandelion and L-glutathione, these ingredients are commonly used for liver support:
Milk thistle (silymarin): antioxidant that may help protect liver cells. Evidence for treating established liver disease is mixed.
Dandelion: traditionally used to support digestion and bile flow, but strong evidence for treating liver disease is limited.
L-glutathione: an important antioxidant produced naturally by the body and involved in protecting cells from oxidative stress.