The 43-year-old singer and TV personality was reportedly found unresponsive by her boyfriend.
The Los Angeles Police Department tells ET that it received a call from the Ritz-Carlton Hotel in downtown Los Angeles at approximately 9:45 p.m. on Thursday. According to police, "The call was in regards to a medical emergency and an individual was transported to the hospital. We don’t know the person’s condition."
A spokesperson for the Los Angeles Fire Department also tells ET that they responded to a call at 9:57 p.m. on Thursday night for a reported unconscious adult female. They dropped the woman off at the hospital, and say they have no information on her current condition.
The Blast reports that Adefeso, who has an address at the Ritz-Carlton Residences, made the 911 call, and told the dispatcher that Braxton had been drinking and had taken an unknown amount of prescription pills. According to the website, Braxton is currently in stable condition but still unconscious, and currently in a 24-hour watch at the hospital.
"Tamar has had a very tough and emotional day -- more information will be coming in the next few days. Please pray for her," her rep told The Blast.
News of Braxton's hospitalization comes just a day after a trailer was released for her We TV docuseries, Tamar Braxton: Get Ya Life!.
"Tamar Braxton has been part of the WE tv family for nearly a decade," We TV said in a statement. "We are keeping her and her family in our thoughts and prayers and joining with her fans sending strength and healing at this difficult time."
Braxton is mom to 7-year-old son Logan Vincent Herbert, whom she shares with her ex-husband, Vincent Herbert.
Braxton opened up to ET in May about co-parenting their son and figuring out her relationship with Herbert after finalizing their divorce.
"We're in a really, really good place. We realized it's not about us. It's not about our feelings," Braxton said at the time. "It's not about what happened. It's about Logan, and it's about us setting the best example for him and being there for him. So, that's the choice we made. You have to make that choice, though."