Is Yibukang reliable? Is there any authoritative certification?

It seems to be developed in America, and it is very effective. My aunt ate this during chemotherapy. None of her patients recovered as fast as her, and no one else could eat. My aunt ate the special nutrition of Yibukang for radiotherapy and chemotherapy, and her appetite was better than others. . I hope my answer will be helpful. Welcome to ask questions. Thanks again!