Local Charlotte station WCNC had cited sources who said Barrino was taken to Carolinas Medical Center-Pineville at about 8:55 p.m. Monday.
Barrino's condition was not life-threatening, WCNC reported.
Barrino is at the center of a lawsuit that charges she broke up a marriage in part by making a number of sex tapes.
Court documents filed by Paula Cook said Barrino and her husband Antwuan Cook began having an affair in August 2009.
The complaint referenced sex tapes, saying the "Husband and Ms. Barrino have at times recorded their illicit sexual activity."
Barrino denied being at fault, with her manager releasing a statement to TMZ saying Barrino is "certain that she is not responsible for the deterioration of Cook's marriage."
Barrino was a crowd favorite when she won the third season of "American Idol."