A second appearance slated for the CBS "Early Show" was canceled.
Hudson's second album, "I Remember Me," is in stores now. She is also starring in the upcoming biopic "Winnie," about Nelson Mandela's wife, in theaters later this year.
UPDATE: A statement was released from Hudson's reps saying, "After performing on 'Good Morning America' earlier today, Jennifer Hudson went to the hospital due to severe abdominal pains. She was treated for food poisoning and released."