Prev. post reminded me. My cat had fatty liver disease and wouldn't eat. She got antibiotics and a feeding tube sewn on her head [and leave the Elizabethan collar ON ... if i let my cat out of it and didn't watch every minute she would sneeze it out.]

I also broke open capsules of Milk Thistle [great for liver!] and flaxseed oil and added it to the liquid food mix from the vet.