Talk to your veterinarian about the heartworm testing that is recommended before starting your dog on a heartworm prevention program.
Collies or other herding breeds may have a severe reaction to Advantage Multi if they ingest the product. If your dog is one of these breeds, and your veterinarian has prescribed Advantage Multi, observe your pet closely for at least 30 minutes to ensure your dog does not lick the site of application. Also observe for depression, weakness, staggering, dilated pupils, trembling, panting, or coma. Contact your veterinarian immediately if you see these signs.
Some intestinal parasites, such as hookworms and roundworms can be spread to people. Talk to your veterinarian about other measures you can take to prevent your pet from being infected with intestinal worms, and protecting yourself.
Notify your veterinarian of any other medications or supplements your dog is taking, and also if your dog has had any reactions to previous medications.