Addict Carrie Fisher ‘High As A Kite’ Before Her Death, Claims Source

Carrie Fisher had a drug relapse just a month before she suffered a massive heart attack on board an 11-hour flight from London’s Heathrow Airport to Los Angeles on Dec. 23, RadarOnline.com has exclusively learned.

The actress, best known as Star Wars’ Princess Leia, died four days later at age 60, after being hooked to a ventilator in the Intensive Care Unit at UCLA Medical Center.

“Carrie had relapsed around Thanksgiving,” a source told RadarOnline.com, disputing news Fisher got a complete handle on her health.

“Some of her friends I talked to doubted she was ever totally clean and sober because she got doctor's prescriptions to treat her bipolar disorder, depression and anxiety,” said the source.

“I saw her myself high as a kite once, not that long ago.”

Sadly, the source said Fisher seemed to be in denial about her addictions, making it difficult to determine whether or not she was actually clean.

“Ironically, she said to me, ’You're too old to get high anymore, dear,’” said the insider. “I replied, ‘You, too, dear.’"

Fisher had detailed her past struggles with alcohol and drugs including LSD, pills and cocaine in an autobiographical one-woman show, Wishful Drinking.

She has also been open about her bipolar disorder.

“I used to think I was a drug addict, pure and simple — just someone who could not stop taking drugs willfully,” Fisher once told Diane Sawyer.

“And I was that. But it turns out that I am severely manic depressive.”