Matthew Perry says you can tell which season of Friends he's on 'lots of pills

Friends' Producer Says Matthew Perry Is 'Stronger And Better'. Now Can We Stop Talking About His Health? - Entertainment

Matthew Perry spills all during Diane Sawyer interview

Six Revelations From Matthew Perry's Diane Sawyer Interview – The Hollywood Reporter

Road to stardom not always easy for man of many jokes

Inside Friends' Matthew Perry's battle with addiction, health scares and porn star scandal ahead of reunion

Matthew Perry Opens Up About His Addiction Journey in New Memoir

Matthew Perry says viewers can determine what drug he was using while filming Friends

Matthew Perry on Addiction Struggles, Near-Death Experiences in Book – The Hollywood Reporter

Matthew Perry's endless loop, promoting his candid memoir - The Washington Post