Demi Moore is reportedly "doing really well" in rehab.

The 49-year-old actress was rushed to hospital last month where she was treated for exhaustion. After her health scare, Demi is believed to have decided to check into a facility to seek professional help for substance abuse and an eating disorder.

The star is reportedly making good progress and her loved ones are already noticing a change in her.

"Demi is really doing well in rehab. She was about to hit rock bottom but now things are looking up for her," a source told RadarOnline.

"Demi has a good outlook for the future and those around her think that she is taking her treatment seriously so that she doesn't have another incident like the one in January."

The star was left devastated last year after reports emerged that her husband of six years Ashton Kutcher had cheated on her on their wedding anniversary.

Since splitting from Ashton, Demi has been spotted looking painfully thin and was rumoured to have been partying to ease her heartbreak. She collapsed at her Los Angeles home on January 23 and is believed to have smoked a substance "similar to incense" before suffering a seizure.

Demi is now determined to deal with her issues and wants to get her life back on track.

"She knows what happened was dangerous and she doesn't want to have a repeat of that again, especially not in front of her daughter," the source added.

"Demi has been doing so well in treatment but the people around her aren't expecting she'll get out yet, she has a lot of work to do still to be and stay healthy."