Suggest Treatment For Facial Pain And Trigeminal Neuralgia

I am bipolar on geodon, lorazapam, and lexapro. I have been struggling with severe migraine headaches. But one of my doctors said that it was more likely trigeminal neuralgia since I was experiencing facial pain at the same time. So he put me on 400mg of tegretol. Later, I went to see a neurologist and they recommended gabapentin and verapamil. Not ruling out a certain type of migraine. I am very sensitive to prescription medications so I tend to have side effects. My concern is what effect would these combinations of medications have me. Especially my mental health.