How long does it usually take for dewormer to work, my puppy still seems uncomfortable after taking it?

I gave my puppy a dewormer yesterday morning because he had been having loose stools. He still seems uncomfortable and is a bit restless. How long does it normally take for the dewormer to kick in, and is there a point when I should start to worry about the lack of improvement?

Answer

It's normal for a puppy to feel somewhat uncomfortable after being given a dewormer, although improvement in symptoms can typically take 1–3 days. If your puppy's condition does not improve or worsens after this period, consult a veterinarian.

  • Most dewormers start to work within a few hours but may take up to a few days to fully take effect.
  • Give your puppy plenty of fresh water, as diarrhea can lead to dehydration.
  • Monitor for any additional symptoms, such as vomiting or severe lethargy, which require immediate veterinary attention.

Dewormers are designed to expel worms from your puppy’s system, which can cause temporary discomfort as the parasites are eliminated. It’s essential to follow the dosage instructions provided by your veterinarian or on the product label. If there’s no improvement after a few days, further evaluation by a vet is recommended to rule out other causes for the symptoms.

If you’re unsure or your pet’s symptoms are getting worse, book a consultation with a licensed vet at Dial A Vet for just $49 AUD.

Frequently Asked Questions

  • How long does it usually take for a dewormer to work?
    The effects of a dewormer can start within hours, but full results are often seen within 1–3 days as the worms are expelled from your puppy’s system.
  • Why is my puppy still having loose stools after deworming?
    Loose stools can continue for a short period as the dewormer works. Maintain hydration and monitor your puppy. If symptoms persist beyond a few days or worsen, consult with a veterinarian.
  • What should I do if my puppy has side effects from a dewormer?
    Observe your puppy closely. Temporary mild symptoms can occur, but if you notice severe reactions such as vomiting, collapse, or extreme lethargy, seek immediate veterinary care.
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