Mixing booze and medication on a flight was an enormous mistake, Selma Blair says in an apology for her bizarre behavior on a flight from Cancun, Mexico, to Los Angeles on Monday. "After a lovely trip with my son and his dad, I mixed alcohol with medication, and that caused me to black out and led me to say and do things that I deeply regret," she says in a statement to Vanity Fair. "My son was with his dad asleep with his headphones on, so there is that saving grace," she writes, apologizing to the passengers and crew. "I am a flawed human being who makes mistakes and am filled with shame over this incident. I am truly very sorry." Blair, 43, was stretchered off the plane and taken to a hospital after the outburst, sources tell People. (More Selma Blair stories.)