Demi Lovato 'getting better' with ex-boyfriend Wilmer Valderrama by her hospital bed

Demi Lovato's ex-boyfriend Wilmer Valderrama has reportedly been spending hours at her bed-side after she was hospitalised by an alleged drug overdose.

He spent "about five hours" at LA's Cedars-Sinai hospital last Thursday, according to TMZ.

Valderrama was photographed looking concerned outside the hospital as a staff member let him in through a side entrance.

The That 70's Show star has been making regular visits since Lovato was discovered unconscious at her Hollywood Hills home early last week.

A source tells E! News, "Lovato is resting and getting better, while her whole family and Valderrama are there to support her through her recovery."

Valderrama and Lovato dated for almost six years, before ending their relationship in 2016.

The 'Skyscraper' singer previously credited Valderrama in an Instagram post celebrating three years of sobriety in 2015.

"I really wouldn't be alive today without him," she wrote. "I love you Wilmer."

Following her hospitalisation, a representative for Lovato issued a statement saying Lovato was "awake and with family", and asked for privacy as she focuses on her health.

The Grammy-nominee has been open about her substance abuse struggles in the past - last month she released a song called 'Sober', in which she admitted to falling off the wagon after six years of sobriety.

Newshub.