I now see how to "ask an expert" involves a fee.
Makes one feel a little misled.
You can go to the FDA site and e-mail or telephone for the physician who is responsible for the drug. Use the generic name. At the FDA every drug is assigned to a physician investigator. Once you get his name e-mail him. If you don't waste their time they are quite helpful. If you feel this side effect has happened, you need to report it as a "possible adverse effect". Then ask him/her if there have been any other reports. Another database to search is Pubmed. That being said, I researched the drug and there doesn't appear on the surface to be interactions that should cause permanent loss of memory.