interaction between xanax, neurontin, zoloft

What are the side effects of the interaction between xanax, neurontin, and zoloft? I take two 100mg pills of neurontin, one .25 mg pill of xanax, and two 100mg pills of zoloft at night. I feel really tired and weak when I awake in the morning. After I get going I am fine for a few hours but then I need to take a nap. I am able to fall asleep at night, even after I nap for a few hours.  I am a college student and I am afraid that these drugs are affecting my ability to go to classes.

[Sandra Y, RPh]

Treatment with both Xanax and Zoloft may result in decreased coordination, decreased ability to concentrate, and excessive sedation.

Adderall (adderrall) and Zoloft could lead to serotonin excess and, potentially, the 'serotonin syndrome' (presenting as agitation, restlessness, aggressive behavior, insomnia, poor concentration, headache, paresthesia, incoordination, worsening of obsessive thoughts or compulsive behaviors, nausea, abdominal cramps, diarrhea, palpitations, or chills).