I am surprised at a doctor combining 2 drugs athat are so similar to treat the condition. Usually it is Neurotin OR Lyrica combined with a SSRI, tricyclic or opiate not the two anti seizure medications together. I would personally get a second opinion on that. Lyrica and Neurontin actually share similar ingredients. Neurontin is the precursor to Lyrica. Lyrica has higher bioavailability.

Here's a thread on the subject: http://neurotalk.psychcentral.com/thread68992.html