I have a female great dane and she was well under weight when I got her, and she also was full of parasites and worms. She scratched some and she used to take Trifexis too. My vet said that the medication could be reacting differently to her than it does to other dogs, or that it is too strong. I switched her to Sentinel Plus which is way better than Trifexis because it covers all worms including tape worms, plus it prevents flea eggs, and fleas, as well as killing existing ones. It comes in a chewable beef tablet too. I also fed her chicken, potatoes, and a lot of bread and milk daily. I feed her Purina Pro Plan Savor (chicken & rice) puppy blend. It comes in small bits instead of adult big kind. She loves it. She is very, very picky 🙂 It worked for my dog so hopefully it would yours too. Hope that this can help…..
