I also use black seed oil (and could possibly also try a bit of bentonite clay), ive used black seed oil on dogs, quail and chickens with good results. One of our pups had a serious bite on its face, no vet was available, very swollen, he looked like a boxer after 15 rounds, colloidal silver and black seed oil and you would never know it even happened. I like the vitamin c idea as well. 💕