Law enforcement sources told TMZ, which was first to report the news, that Lovato, who was found unconscious, was treated with Narcan - a medication created to rapidly reverse opioid overdose - at her home before being transported to a local hospital.
TMZ was the first to report that Lovato had been hospitalized for a drug overdose, based on its sources, and other outlets including People magazine also reported that her hospitalization based on sources.
The news came about a month after Lovato released a song called Sober, in which she alludes to relapsing from sobriety.
Demi has been open about her struggles with cocaine and alcohol in the past. On Sunday, the singer's "Tell Me You Love Me World Tour" touched down in Paso Robles, California, for a stop at the 2018 California Mid-State Fair. Her song is intense, but that's how she deals. Lovato often speaks about how important her fans are to her.
Lovato has been candid about her battle with addiction. Their source didn't disclose what drug she overdosed on but it was reported previously that she was administered Narcan, a substance used to reverse the effects of opioids.
The Los Angeles Police Department would confirm only that officers responded around 11:40 a.m.to a home in the 8000 block of Laurel View Drive in Hollywood for what was described as a medical emergency. "I'm so sorry. I'm not sober anymore", she sings in the tune.
Singer Demi Lovato performs at the 2016 Global Citizen Festival in Central Park to end extreme poverty by 2030 at Central Park on September 24, 2016 in New York City.
Talk show host Ellen DeGeneres added: "I love @DDLovato so much. I promise I'll get help". It breaks my heart that she is going through this.
Two killed, 12 injured in shooting in Toronto's Greektown
An eyewitness said that he heard the weapons being loaded multiple times and the gunman must have fired about 20 shots. Police chief Mark Saunders has said the injured range in age from 10 to 59 and their injuries from minor to serious.