My dog is lethargic and sad after heartworm treatment. Is this normal?

Question

Nina got her first dose of her heart worm treatment today and she was happy to see us when we went to pick her up, but after we got home she got really sad she loves to chew and we gave her a bone to keep her busy since she has activity restrictions and usually she would destroy the bone she doesn't seem to want to do anything we gave her the pain medication the vet gave us. But is this behavior normal? The vet did say the treatment could be painful do you think she may be sore and in pain? Pet's info: Dog | American Bulldog | Female | spayed | 2 years and 5 months old | 75 lbs

David Elbeze, DVM, MRCVS · Accepted Answer

This treatment could cause lethargy, it's quite common and this is one of the reason restriction is a must. if she becomes too lethargic you might need to take her to the ER, especially if you notice abnormal breathing.

My dog is lethargic and sad after heartworm treatment. Is this normal?

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