Hi I Have A 15 Year Old Daughter Who Struggles

Hi I have a 15 year old daughter who struggles in school and has mild depression and takes Citalopram 10mg daily. I heard about a pill, cogniflex that helps your memory and concentration and was wondering if its a good idea to try. She used to take Adderall and it didn't help much and she lost weight on it when she only weighed 90 lbs to begin with. Can you tell me about the drug