is neurontin harmful
Neurontin Side Effects. Most Neurontin side effects are mild, such as sleepiness, dizziness, headache, alcohol intolerance and nausea. However, more severe and potentially harmful side effects include: 1  Suicidal tendencies. 2  Memory loss.3  Vomiting and diarrhea.4  Viral infections. 5  Convulsions. 6  Mood changes.eurontin Side Effects. Most Neurontin side effects are mild, such as sleepiness, dizziness, headache, alcohol intolerance and nausea. However, more severe and potentially harmful side effects include: 1  Suicidal tendencies. 2  Memory loss. 3  Vomiting and diarrhea. 4  Viral infections.