Andrew Luck will stop throwing due to soreness in his surgically repaired right shoulder.

Luck practiced for two days two weeks ago and then increased his workload last week.

"The doctors and the trainers have decided to give him a cortisone shot to kind of take away some of that inflammation that's been happening," Chris Ballard said.

"He'll continue to rehab. We're just going to shut down the throwing right now to get this thing calmed back down."

Ballard would not put a date on when Luck will resume practicing. 

The Indianapolis Colts aren't prepared to put Luck on injured reserve at this time.