The cause, however, is unclear.
Lovato, 25, a Grammy-nominated recording artist, was "okay and stable, reported People magazine, quoting an unidentified source".
Representatives for Lovato did not respond to a request for comment.
Explosion reported outside of USA embassy in Beijing
Postings on social media showed pictures of smoke close to where people line up outside the compound for visa appointments. Li said the blast happened shortly after 1 p.m.as he queued to apply for a US visa to take an exam in Los Angeles.
Lovato, 25, has publicly struggled with substance abuse and an eating disorder during her career, and had previously done stints in rehab starting in 2010. Last month, she released her new song "Sober," where she revealed that she had relapsed.
According to TMZ, the overdose took place at Lovato's home in the Hollywood Hills in LA.
We'll keep you updated on more information.
On her recently released ballad, Lovato sings about not being sober anymore and it's a candid reflection on her recent misstep with the help of producers M-Phazes, Tushar Apte, and RØMANS.
China's Xi says 'no winner' in any trade war
He said 7,000 South Africans work in jobs affected by the metals tariffs; an effort to secure an exemption from the United States government was unsuccessful.
As soon as news broke about the singer's apparent hospitalization, several celebrities - including recent Lovato collaborators - tweeted their well wishes. "The source went on to say, "[Valderrama] was not aware that her issues were this severe and intense at this time".
Brad Paisley said he was praying for his "brave" and "honest" friend, calling addiction "a terrifying disease".
Demi is now mid-way through her world tour and was next due to perform on Thursday in Atlantic City, but the performance has been cancelled.
She has said: "I felt out of control with the coke the first time that I did it", adding, however, that she grew to "love it". However, previous statements from the singer about her addiction battle do reveal that she has used cocaine and Oxycontin frequently in the past.
The government seized over 100 tapes from Michael Cohen
According to the report, investigators seized over 100 tapes from Cohen that have to do with Trump and his businesses. We hear Trump say "pay with cash", we hear Cohen saying "no no no", someone says "check", and the thing suddenly ends.