Oprah Winfrey Goes to the ER for Stomach Bug, Misses 'CBS Mornings' Appearance

Gayle King shared the reason why Oprah Winfrey was not on Tuesday's show to announce her book club pick.

Gayle King had a little overshare moment while explaining Oprah Winfrey's absence from CBS Mornings on Tuesday due to a stomach flu.

While kicking off the Oprah's Book Club segment, King candidly explained to author David Wroblewski why Winfrey -- who is usually in the studio to celebrate her pick -- missed the moment to be beside him to speak about his book, Familiaris.

"I'm so glad you are here and I'm so sorry that Oprah can't...," King told Wroblewski. "Yesterday she said, 'I'm gonna rally, I'm gonna rally.' She had some kind of stomach flu where stuff was coming out of both ends."

King's co-hosts, Nate Burleson and Tony Dokoupil, both audibly reacted to the news -- and King's reveal. 

Gayle King Revealed that Oprah Winfrey was absent from 'CBS Mornings' due to a stomach flu. - Getty Images

"I won't get too graphic," King continued. "But needless to say, she ended up in the hospital [for] dehydration and had to get an IV. It was a very serious thing. She's OK... she will be OK."

Noticing that she may have shared too much information, King reiterated how much her pal wanted to be there to celebrate the author. 

"I hope she's not mad at me for sharing that detail," King added. "I wanted to make it clear though it mattered to her and it really bothered her that she couldn't be here today, but we will pick up the slack."

King, Burleson and Dokoupil continued the conversation with the author, who was previously selected for Oprah's Book Club in 2008. 

Following King's reveal, a statement on behalf of Winfrey was made via the Oprah Daily Instagram account further explaining her absence. 

"@oprah was scheduled to go on @cbsmornings today to announce her latest @oprahsbookclub selection. When she came down with a stomach virus over the weekend, @gayleking—being the best friend she is—offered to make the announcement for her," the caption read. "We are happy to share that after receiving an IV due to dehydration at the recommendation of her doctor, Oprah is feeling much better. We wish her a speedy recovery 🙏🏽."

Next to the caption was a note with an official statement from The Color Purple producer's rep. 

"Ms. Winfrey is recovering following a stomach virus and received and IV due to dehydration at the recommendation of her doctor," it read. "She is resting and feeling better every day." 

Later on Tuesday, King got on a video call with Winfrey, who clarified that she wasn't hospitalized, but rather received fluids at the emergency room.

"I was in the emergency room. I was so dehydrated," Winfrey said. "I had dry mouth and I couldn't keep enough water down to get hydrated, so I went to the emergency room for that, and that's just it."

As for how she's doing now, Winfrey said, "I'm not 100, but I'm on my way to 100." She did note, however, that a Tuesday CBS Mornings appearance was out of the question as she was "too weak to get on a plane."

In the caption of her post, King wrote, "She was sidelined with a stomach virus that caused such dehydration that she went to the hospital to get an IV drip."

"I thought I made that clear but next thing I know I'm surprised to see headlines that scream 'Oprah's hospitalized!' (She was NOT!) And I'm bombarded with calls asking if Oprah is okay," King added. "The answer is yes! And now let's go straight to the source."

On Wednesday, King returned to the Oprah Daily office with another special message. Taking to Instagram, the veteran anchor showed off her shirt that read, "Oprah is fine! Thank you for asking," on the front. 

On the back it read, "She appreciates your concern." 

"Just got back to the office and 10 people asked me the same question...here's the answer! And swipe left!," King captioned the post. 

Winfrey and King's long-term friendship knows no limits. Last week, Winfrey was part of the festivities as she hosted King's son, William Bumpus Jr.'s, wedding at her property. 

"Oprah, of course, was there because it was at Oprah's house," King said while sharing the news on CBS Mornings, adding with a chuckle that "it's a very nice venue" and "the prices are very reasonable."