Oscar has congestive heart failure; and sometime during the regular administration of his medicine and swithching his food over, he decided to stop eating on his own. Thank you for the suggestion of the tonic. I've never seen it here, but it reminded me of something else to try on him. We used to keep Pet Tinic around, but couldn't find it for a long time. I did a search and found where I can get some. It is a liquid vitamin supplement just for pets. It was the only time our pets liked to see a syringe coming So, maybe that will help him. Again, thank you.