How long does it take for Corgi deworming medication to take effect Corgi deworming medication usually takes effect within 24 hours. The internal deworming medication is 100% effective against the parasites in the gut, which means that it works within 24 hours. However, it takes time for the internal parasites to be eliminated, so we usually observe whether the dog is vomiting and whether there are worms in the vomit and in the dog’s stool to determine how many worms are in the dog’s body, and if there are more, it is recommended to repeat the medication after a week. Since parasites have a certain cycle of growth, the timing of medication should also match this cycle. It is therefore recommended that you visit a reliable vet for the appropriate medication and instructions on how to administer it.
