Suggest Treatment For Cirrhosis Of Liver, Depression, Liver Damage And Weight Loss

my son has cirrohsis of the liver,suffers depression,liver very damaged,loss of wgt,fatigue fluid in abdomen,was prescribed gabapentin,600mgs 2 tabs at nite for anxiety and his inability to sleep. I read it doesnt filter thru the liver and only 1%have liver damage, I am concerned he mat be in the 1 %, he 42 yrs old. I want him to try milk thistle which hhelps the liver, any apinion on this herb