My puppy had cat flu. Why is she still lethargic after the vet?

From the sign you are describing it is quite difficult to determine the underlying problem. General signs of lethargy could be commonly due to high temperature which may be related to an infection. In puppies gastrointestinal and urinary tract infections are by far the most common type of infections. If the signs do not resolve in the next 24hours or if Luna is showing any inappetence, more evident lethargy or any other signs (vomiting and diarrhoea for example) I would strongly advice a veterinary check up.

First of all stop with the Diprin immediately, it is not suitable for dogs. You are saying you have a puppy, if this is the case she cannot be suffering from "cat flu" so I am not sure what she is suffering from, but it sounds as her condition is serious and if you have not taken her to the vet already, I recommend doing it urgently.

Poor Luna! When pets have severe viral infections, they need supportive care. This may include intravenous fluids and feeding through a nasogastric tube. It sounds like Luna is very sick. I recommend to call her veterinarian and discuss parental feeding and fluids. She may also need additional supportive care. I hope this helps and I hope she starts recovering quickly.

It's most likely the illness that is causing her to act like this. It's common for puppies to get various upper respiratory infections at this age. She could have been perfectly normal last week, but she is definitely sick now, so I recommend a recheck by the veterinarian. Upper respiratory infections are often treatable and do not cause severe disease in pups, but there are a few scary diseases (i.e. Canine Distemper) that can start-out like this and become very serious later on. For this reason, I recommend scheduling an appointment with a vet in the next day or two. I hope that helps and Piper gets better soon.

Puppy's getting sleepy after their shots is a normal reaction to vaccinations. They can also have a low grade fever and/or one bout of vomiting/diarrhea normally that are no cause for concern. The concern arises when your pet is severely lethargic, not eating, non-responsive, pale gums, or excessive vomiting/diarrhea. If you notice any of these symptoms then it is best to take puppy to a vet asap for immediate care, because a mores serious vaccine reaction is occurring at that point.

Great question! Unfortunately, I don't have a great answer. If your dog is eating and drinking normally and the issues that necessitated her hospitalization have resolved, I would be far less concerned. Until she has completed the courses of medication, it is ultimately impossible to determine if her lethargy is secondary to medication or due to illness. Consider calling your vet to discuss if any of the medications can be discontinued or if any doses can be reduced to limit potential lethargy. I hope that all goes well!

I recommend double checking with your primary vet since they know more about her specific history, but I would wait until she is symptom free and back to her normal self for a week before vaccinating. Hope this helps!