Lamar Odom remains unconscious and is fighting for his life in a Las Vegas hospital, according to reports, after being found unconscious in a Nevada brothel Tuesday afternoon.

The ex-husband of reality-show star Khloe Kardashian, the former NBA star has struggled with substance abuse, a major factor in the dissolution of his marriage, and is in a coma, with his heart failing, according to TMZ. In addition, he is having problems with his lungs and kidneys, TMZ reports.

Odom’s long-time publicist and friend cautioned Us.com in a statement that there is a great deal of false information going around. “Family and friends are extemely concerned for Lamar,” Eve Sarkisyan said in a statement. “Please don’t listen to the false information being circulated unofficially. Please respect the family’s privacy during this difficult time.”

According to E! News, Odom, 35, had checked into the Love Ranch South, owned by Dennis Hof of HBO’s “Cathouse” fame, where he had been staying from Saturday until Tuesday, when an employee discovered him unconscious in his room. The staff at the brothel called a 911 operator, who instructed them to turn Odom on his side, at which point he began “spitting up liquid.”

A plan to airlift him to a hospital was scratched because, at 6 feet, 10 inches, he was too tall for the helicopter. Instead, he was taken by ambulance to the hospital.

TMZ Sports offered more details:

An ambulance took Lamar to Pahrump hospital, where doctors intubated him … an indication he could not breathe on his own. …
Our sources tell us, “It’s not good.”
We’re told Lamar had been partying at the ranch by himself — with no friends or entourage — and is now alone at the hospital.

Odom collapsed at Hof’s Crystal, Nev., establishment, which is about 90 minutes northwest of Las Vegas. Hof told NBC News that Odom was taking “herbal Viagra” and he was taking a lot of it. One of the side effects of large amounts of the herbal supplement is, according to the Mayo Clinic, dangerously low blood pressure.

TMZ reported that Odom’s heart was failing. “The only thing we know for sure is that he was taking an excessive amount of herbal Viagra,” Hof said. “Not to say that he wasn’t doing any drugs. But nobody saw anything like that. They saw no effects. What I understand is that he got a phone call and was a little bit somber on Sunday afternoon for a while. And then he kind of shook it off and was having a good time … They were having a blast with Lamar.”

Odom was visited overnight in the hospital by Kobe Bryant, his former Lakers teammate, and the team’s general manager, Mitch Kupchak. The Lakers played a preseason game in Las Vegas on Tuesday night and the team’s flight was delayed two hours in leaving. Kardashian, according to TMZ, is by his side and Eonline.com reports that she is “complete inconsolable and heartbroken.”

The Kardashian-Odom relationship was always complicated and she spoke to E! News about the feelings she still has for him.

“I will never, ever not love Lamar,” she said earlier this year. “I was so obsessed with him in a healthy way. He was my husband, and I still wish he was, and I don’t think there’s anything wrong with that.”

But, she noted, “There’s nothing I can do. Lamar has to do things in order to change in that aspect, but yeah, if I had my way I’d be married to Lamar in two seconds.”

Odom last played in the NBA for the Clippers in 2012-13, the final season of a 14-year career after being the team’s fourth overall pick in the 1999 draft. Odom played for four teams during his career, most notably the Lakers, with whom he spent seven seasons and won the 2009 and 2010 NBA titles. He was the NBA’s Sixth Man of the Year in 2011.

Odom’s problems worsened when his playing career ended and, in 2013, he agreed to a plea deal for suspicion of driving under the influence and entered a rehab facility the same year.

Odom has faced tragedy over the years. A cousin he was close to died during the 2010-11 season and he was a passenger in a vehicle involved in an accident in which a cyclist was killed in New York. In 2006, his 6-month-old son Jayden died from SIDS while sleeping in his crib.

Odom has a daughter, Destiny, and a son Lamar Jr., from a previous relationship.