Benard was sitting in a chair in front of his cubicle Thursday when he suddenly fell to the carpeted floor. Some of his teammates, who were getting dressed for practice, thought he may have been joking before linebacker Matt Roth yelled for a trainer.
Benard did not appear to lose consciousness and his eyes were open as three members of Cleveland's training staff checked on him. He was taken to Southwest General Hospital.
The team released a statement saying Benard was released from the hospital at 8:15 p.m. and would undergo further evaluation on Friday.
The 25-year-old Benard, who leads the Browns with 4.5 sacks this season, was sitting up and appeared alert when he was wheeled out of the team's facility on a stretcher and placed in an ambulance. He collapsed just as the 45-minute media interview period was ending.
The Associated Press contributed to this report.