Alex O'Loughlin Gets Treatment for Prescription Pain Medication
03/02/2012 AT 08:05 PM EST
The Australian-born actor, 35, is to "receive supervised treatment for prescription pain medication due to a recent shoulder injury," his rep says.
The popular police show has already shot 19 episodes for the season with production said to be ahead of schedule.
"We respect and support Alex's decision," CBS TV Studios says in a statement. "Everyone at CBS Television Studios and Hawaii Five-0 wishes him well and we look forward to his return."