I was taking Gabapentin for Fibromyalgia and neuropathy. I switched to Lyrica because the Gabapentin did nothing for the Fibromyalgia pain. I was tired all the time, could not drive, and felt like my brain just wasn't working at full capacity. Made a lot of mistakes when on Gabapentin. My husband takes it for neuropathy and it affects his cognitive function. Thank you for sharing.