U.S. funnyman John Pinette has entered rehab in a bid to beat his prescription pill addiction.

The comic, who has appeared in Seinfeld and 2004 film The Punisher, has checked into a clinic to tackle his issues after becoming hooked on painkillers following an operation earlier this year (13).

He has postponed a series of shows to concentrate on his treatment.

Taking to Twitter.com, he writes, "Thanks to everyone for your concern and well wishes.. Want to apologize for having missed shows last weekend, but I hope you understand!"