"Came back to Heartgard"
Our local vet stopped carrying Heartgard and gave our Emme another brand. We noticed the first time we dosed her that she was "off her feed" for a day but seemed fine otherwise. The next month she took the dose, but within 45 minutes she vomited several times and began acting VERY lethargic. We rushed her to our vet where she was diagnosed with an allergic reaction. She was treated accordingly and recovered her appetite and pep a day or two later. Our vet blamed a new rawhide chew instead of the heartworm treatment stating that all heartworm meds pretty much contain the same ingredients. In our opinion the inactive fillers in the medicine which made it crunchy instead of chewy may vary widely and this could have been what she reacted to. We returned to Heartgard through PetMeds and our dog had absolutely no problem this month when we dosed her. She has also ingested more of the rawhide chew in question with no bad results. We will stay with the Heartgard Chewables.