Suleman, 37, checked into the Chapman House Treatment Center last week because of "anxiety, exhaustion, and stress" linked to a Xanax addiction, her rep says.
"Ms. Suleman has been taking Xanax that was prescribed by her doctor to deal with her anxiety but she felt she needed a treatment program to help with her recovery," her rep tells ABC News. "She will be in treatment for 28 days or more if needed."
The rep adds, "Although the rehab offered to treat her at no charge, Ms. Suleman opted to pay for the program."
Suleman, who made headlines when she gave birth to octuplets in 2009 – in addition to her six other children – will leave her brood in the care of three nannies and friends, TMZ reports.
Suleman filed for bankruptcy in April and recently made an adult video and posed semi-nude for a magazine to earn cash.