My Floppy ferret was very sick when younger. Went to vets for meds a few times. The only thing he could eat was b.food turkey. Around the clock feeding finaly could handle stewed chicken breast with it , also nutra-cal 2 times a day. About 2 weeks later he could eat ground up Purina one cat chow. About 2 months later he could eat regular dry bland food. Still eats Purnia one cat and kitten chow. Has b.food again to go with pedia pred. Floppy is 8 years old now. Have you tryed peptoal bismal? Sounds like your ferret has gastric ulcers. Keep going back to the vets, or even look for a better one. Call some of the ferret shelters for names. Ferretwise has always helped me with questions, they are in N.H. Carol [Posted in FML issue 4657]