While worms rarely cause serious health problems (except in the case of lungworm, a different type of parasitic worm which requires a specific wormer), they can leave your dog feeling less than their best.
Can dewormer make a dog lethargic?
It's common for puppies to vomit dead worms or pass them in their stool after they have been dewormed - this indicates that the dewormer worked. She may also be a bit tired for a day or two after deworming.
What can I expect after my dog is dewormed?
As with any oral medication, dogs can occasionally vomit shortly after taking the dose. If your pet is a puppy or has a habit of eating food or drinking water too quickly and getting sick, monitor them for vomiting for two to three hours after administering the deworming tablet.
How long does it take for a dog to feel better after deworming?
You should expect your dog to experience some diarrhea after deworming. This should last for a day or two as the worms get passed out in poop.
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