Side effects can vary from person to person and the dosages they take. First the FDA doesn't approve neurotin for pain control!!!!!! In fact the drug company is in real deep do do. So if you receive no pain relief your not crazy. Second I was prescibed 2400mg a day and I become very sick, nausea, forgetful, incoherent and I hallcinated. After that any dosage made me sick with varing degrees of side effects My eye sight changed, my glasses were no good until I stopped and allowed several weeks to pass, I was extremely tired also. I hope this answered some of your questions. Stand your ground if it dosen't help you or make you ill. Good luck GOD-BLESS!