BASTA is an herbicide which contains glufosinate ammonium as a main component with an anionic surfactant, polyoxyethylene alkylether sulfate, and nonselectively inhibits glutamine synthetase. It became a wildly used herbicide in Korea and its intoxication is now increasing. A 42-year old woman ingested about 300ml of BASTA in a suicide attempt. She showed unconsciousness and respiratory distress in the beginning, and later developed multiple generalized convulsions, low blood pressure, fever and diabetes insipidus. Although she became alert 12 days after the ingestion, she showed retrograde amnesia for a period of about recent 10 years. A neuropsychological test on day 22 revealed frontal lobe dysfunction, visual memory disturbance and slight decrease in visuospatial function. All these neurological abnormalities that might occur due to glufosinate ammonium were almost improved in the follow-up test performed a month later.