I'm so sorry to hear this. When I was giving my RB Sunny Buprinex, I noticed that it would make him very lethargic and he wouldn't want to eat so I didn't want to give it to him unless he really needed it. Towards the end he would also throw up after eating. It's just so sad to watch. I hope Boo will make another turn around for the better very soon. Lots more prayers and positive thoughts are being sent his way.