I am not sure if this is the right place to ask questions for pets so please direct me somewhere else if I am wrong. I was prescribed fortekor for my cat by the vet, but since starting, she has been extremely sleepy and doesn't get up, other than to eat and use the litter tray. She doesn't even want to go out. Is this because of the fortekor, and how long do you think it will go on? Do I need to call the vet now?