Iowa Governor Terry Branstad was discharged from the hospital in "good condition" after falling ill during an event in Johnston on Monday afternoon.
His office said he left Iowa Methodist Medical Center at 9:00 AM Tuesday, about 21 hours after being admitted.
The governor is said to be resting comfortably at his residence after resting and receiving intravenous fluids throughout the night.
Dr. Kevin Cunningham, who is Branstad's personal physician, said the incident in Johnston was caused by "a mild flu and dehydration."
"We have ruled out other contributing factors, including cardiac issues and stroke," said Dr. Cunningham. "Governor Branstad will be able to resume a normal work schedule in the near future.
All public events were canceled for Governor Branstad and Lt. Governor Kim Reynolds through Sunday, February 1, to allow "ample time to rest and recuperate."
The governor's office said the two plan to resume their schedules on Monday, February 2.