Credit: James GladerEagles manager Irving Azoff believes that the medicine that Glenn Frey was taking to manage his rheumatoid arthritis contributed to the musician’s death. The 67-year-old Frey died Monday of complications from arthritis, ulcerative colitis and pneumonia.

“He died from complications of ulcer and colitis after being treated with drugs for his rheumatoid arthritis which he had for over 15 years,” Azoff told The Wrap, claiming the colitis and pneumonia were “side effects from all the meds.”

Azoff said Frey struggled for years on the road with arthritis. “One day his knees would hurt, his hands hurt,” he said.

Irving also paid tribute to Frey’s talents. “I wouldn’t have been the success that I’ve been without Glenn Frey teaching me, leading me and supporting me for over 40 years,” he said. “He was a passionate family man, a great father, a great humanitarian and he’s gone away too soon.”

In the wake of Frey’s death, Showtime is re-airing the two-part documentary History of the Eagles this week. The screenings begin on SHO2 tonight, January 19, at 8 p.m. ET/PT, with subsequent airings taking place on Showtime this Thursday, January 21, at 7:55 p.m ET/PT and Saturday, January 23, at 6 p.m. ET/PT.

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