Hi Owens, I am new and this is my 2nd time experiencing cystine crystals in my bully and was wondering if you had any advise on food. I am currently feeding my fromm lamb and lentil and the vet said I should switch but I am not crazy about the prescription diets. I would like to try and cook for him bc this scares me and want him to get better! Right now he is on clavomax and need a diet change! Thanks so much in advance