Hello You are a dibetic and taking neurotin 300 mg three times in day for one month . I want to tell you few things about gabapentine i.e,. neurontin . Doses : 300 mg 1st day , 300 mg twice in day ( 2nd day ) ,300 mg thrice in day on 3rd day . Maximum dose 1200 mg in three divided doses , so need not to worry ,your doses are normal . Onset of effects: Within a few weeks , but in your case you had taken only one month , so you have to wait for another 2-3 months for desired results. Duration of action : 6-8 hours , so in that sense you took 900 mg on previous night and next morning 600 mg , so mild numbness or nausea , may be . But you are a diabetic patient and these symptoms like numbness etc may be due to neuropathy ,so don t worry ,rather take full dose as advised by your treating physician and you will get desired results within short period. Good luck. Side effects are: dizziness , somnolence , ataxia , fatigue, nystagmus, headache , tremors, diplopia, nausea & vomiting. However these are minor side effects in comparison of benefits , so take this drug.