I take Topamax for Trigeminal Neuralgia. I have always taken the brand name. after reading all the bad things about the generic. Last Tuesday when I refilled my script they didn't ask me (generic or brand) and gave me generic. When I got home I didn't have time to fuss so just took it and got on. 2 hrs later I started crying, then the vomiting, dizziness, pins& needles and, hallucinating started. I thought I had really bad flu .I couldn't keep anything down. This went on for 5 days until I went back to pharmacist and demanded he give me the name brand. He did but said they are all the same.Two days later I am starting to feel a little better. Has this happened to anyone else? How can they all be the same? It seems like my body was put on a high dose of a completely different drug and just did not cope. Has anyone had anything similar to this happen to them? Please respond?