Lindsay Lohan can't stop eating since her Adderall was taken away.

The 26-year-old actress begged doctors at the Betty Ford Clinic, where she is completing 90 days of court ordered rehab, to allow her to continue to take the psycho-stimulant medication, but after being forced to give it up, she has put on five pounds.

Although Lindsay has claimed she uses the drug to treat attention deficit hyperactivity disorder (ADHD), friends believe she was using it for weight loss.

A source told RadarOnline: ''Lindsay has been extremely emotional this past week and is finding comfort in food. Lindsay can't stop eating, and has gained five pounds because she has such poor eating habits. She has been exercising, but she just doesn't have a lot of energy because she is no longer taking Adderall, which is a psycho-stimulant medication that contains amphetamine. She has been talking to a nutritionist at Betty Ford about eating healthier.''

Betty Ford's doctors rarely prescribe anyone over the age of 15 the powerful drug, because they believe there are plenty of alternative treatments and also think that many people misuse the drug to control their weight.

Lindsay has been assigned a full team of carers - including a psychologist, dietician, chemical dependency technician and physician - who have devised a tailored care plan for her.

The troubled starlet was previously said to have freaked out and ditched her original plan to enter the Seafield Centre in New York for treatment because it doesn't allow its patients to smoke.