What is the controversy with Topamax?

Could you elaborate on the controversies surrounding Topamax? Are there any safety concerns that patients should be aware of? Have there been any recent studies or reports that have raised questions about its efficacy or potential side effects? Additionally, how does the FDA view the drug, and have there been any changes to its classification or recommendations in recent years? Understanding these issues is crucial for patients and healthcare providers to make informed decisions about its use.