Octomom Nadya Suleman has checked herself into a rehabilitation centre, citing anxiety, exhaustion and stress, a spokeswoman for the mother of 14 said.

Suleman had been taking the medication Xanax under a doctor's care to deal with her problems, but she felt she needed a treatment program to help with her recovery, spokeswoman Gina Rodriguez said in a statement.

Suleman checked herself into the Chapman House Treatment Center on October 23 and ''will be in treatment for 28 days or more if needed,'' Rodriguez said.

The rehab facility declined to confirm they are caring for Suleman because of patient confidentiality laws.

Meanwhile, three nannies and two of Suleman's friends will care for her octuplets, who will be 4 years old in January, and her six older children.

A driver will take the kids to and from school, and their Palmdale home in the Mojave Desert has around-the-clock security, Rodriguez said.

Suleman has repeatedly been investigated by social services over allegations of neglect and child abuse.

Prosecutors decided not to file charges earlier this month following the most recent allegations. Rodriguez said the woman who made the allegations was obsessed with Suleman's children.

Suleman, who has been in the media spotlight since giving birth to the octuplets in 2009, lived in Orange County until she moved her brood to the Palmdale home earlier this month.

After the move, she told the local newspaper she was happy because she was no longer receiving death threats.

Over the last four years, Suleman has tried to cash in on her notoriety in a variety of ways, including endorsing milkshakes, making a pornographic video, posing for semi-nude photo shoots and participating in celebrity boxing matches.

Rodriguez said the rehab centre offered to treat Suleman at no charge, but she opted to pay for the program.

All 14 of Suleman's children were conceived through in vitro fertility treatments. Her octuplets are the world's longest-surviving set. 

- AP