Dax Shepard has opened about his current struggles after his long-running, publicly celebrated sobriety. The actor admitted in an interview on his podcast Armchair Expertposted Friday that after 16 years clean and sober, he relapsed and began takingVicodin, saying that for the previous eight weeks, "I'm on them all day." The actor talked about his father dying in 2012 of cancer and how that began the rocky road of his sobriety, which at that point he had maintained for eight years.