Here's why:
* Dosage: Deworming medications are carefully formulated based on weight. A full dose for a larger dog can be toxic for a puppy under 5 lbs.
* Active ingredients: The active ingredients in dewormers can be harmful in high doses, potentially causing liver damage, seizures, or even death.
What you should do:
1. Contact your veterinarian immediately. They can assess your puppy's condition and provide the correct dosage of medication.
2. Never self-medicate your puppy. Only give medication prescribed by your veterinarian.
3. Monitor your puppy closely. Watch for any signs of illness or adverse reactions.
Remember: Your puppy's health is paramount. Seeking professional advice is the best way to ensure their safety.