Hi, my dog Daisy is 10 1/2 yrs old, an 80lb Lab cross. She started having seizures 4 months ago. Vet prescribed Phenobartitone 60mg twice a day. 2 weeks later blood test shown liver was good. Cause of seizure is probably brain tumor. The first 2 months she was good, only side effect was very thirsty. 2 months ago, she started having maybe 1-2 good days then 2-3 bad days. Bad days mean she is very lethargic to a point only her breathing tells us she is still alive. Her appetite was also affected. She used to eat anything but on a bad day she refuses to eat. I reduce the Pb gradually to 100mg a day now. The degree of lethargy reduce a bit but her appetite has not improved. I cook lean chicken breast with rice and some beef, she only eats a little bit. This makes giving her medication very difficult and she is getting thinner. Before I take her to the vet I like to ask for your opinion please. Thank you.