Patricia Diane Siveny
Every dog as are humans. There are warnings on the packages of bravecto and nexguard that it could be harmful to a dog or cat with a compromised immune system. This takes me back to applying a topical flea and tick medication to my cavalier who had MVD. She went immediately into seizures. Fortunately I do a lot of research, and immediately wash her with Dawn dish soap and the seizures stopped. My concern is that vets do not test their patients health before prescribing this medication. There are many pets who have compromised immune systems that are not as easily diagnosed as mitral valve disease. So topical should be prescribed first before going to the hard stuff. Because once the oral is taken, it is much more expensive to undo it if it can be undone.