Frog is ignoring food

[GrifTheGreat]

Ok new UPDATE: took him to the vet this morning to see if all the barium tracer left his body, the answer is yes, also his weight is up 4 grams from a week ago, however he still seems uninterested in food, in addition, he made a bowel movement on the way to the vet which contained chitin meaning he is eating something lol, seems to be getting better, any suggestions, hes going to need vitamins soon and im not sure how to give them him, can vitamins be absorbed through the skin?

Calcium can and so can vitamins, but the vitamins will irritate his skin. You may need to force feed him. You can buy liquid calcium to add to his water. The chitin was probably constipating him and left over from his last meal.