Good news for a straightforward trip to Italy: treatment against the tapeworm Echinococcus multilocularis is not required to enter the country. Italy isn't on the EU's list of countries that require it, so this step can be skipped entirely if Italy is the only destination on the itinerary.
It becomes relevant only if a dog is continuing on from Italy to Finland, Ireland, Malta, Norway, or Northern Ireland — all five require proof of treatment before arrival, since they've historically been free of this parasite and want to stay that way. In those cases, an authorised vet has to administer an approved treatment (typically containing praziquantel or an equivalent compound) between 24 and 120 hours before arrival at the destination, and record the exact product and administration time on the health document.
The requirement applies to dogs only — cats are exempt from tapeworm treatment under EU pet travel rules regardless of destination.