Sylvester Stallone star of the film Daylight, arrives at the film's world premiere with his girlfriend Jennifer Flavin and his son Sage Stallone. AP/Kevork Djansezian
"We talked about my wedding and he seemed to be thinking about it," he said.
He said Sage, son of action star Sylvester Stallon, suffered from anxiety and that he saw prescription medications like Vicodin, Klonopin and Paxil at his friend's house.
He added Sage smoked two or three packs of cigarettes a day, though did not take recreational drugs and never drank.
Actor Sylvester Stallone with his son Sage Stallone in the 1990 film Rocky V.
"He would have withdrawal and get depressed. He would try to overcompensate. He would try to clown around and I know that those are things people do, medicate or wake up. He was no different."
An autopsy on Sage was deemed inconclusive, while toxicology tests are not expected for several weeks.