ADHD and weight loss pills

[CurleyGirl7]

My little sister was diagnosed with ADHD when she was around 14. She is now 18 and she takes Concerta 72 mg. daily. Because of her ADHD, she has become a compulsive eater and is now very obese. Now that she is 18, she wants to try weight loss pills like Alli and Lipozene. I advised her against it, saying diet and excersise are the best options, but she has a lot of trouble loosing weight, like most of my family. I am very worried that Concerta mixed with any weight loss medications can cause problems.
Are my fears rational?
Thanks.

[CurleyGirl7]

Thank you very much!
I will pass the info on to my little sister.

[Rebecca Resnik, PsyD]

Hello,
   Anyone taking psychotropic drugs should consult their psychiatrist prior to making significant lifestyle changes, particularly regarding adding other medications. I agree that she would benefit from help from a professional, and would hope that she is wise enough to take your advice.

Best Wishes
Rebecca Resnik