As you know, I've been on Tegretol for a few weeks now to treat my TGN. It took around 5 days, I think, to really kick in. So far, I have only had a couple of minor tingling sensations that are my warning that a TGN flare is imminent, but I've not had any full flares for a couple of weeks now. The drug has a laundry list of possible side effects, but as of yet, I have experienced no side effects at all. Honestly, I would not care if I did experience some side effects. ANYTHING that takes away the living hell known as Trigeminal Neuralgia is worth it regardless of side effects. Tegretol is the last pharmaceutical option for me in treating the TGN. My only other options beyond it are targeted radiation therapy (Gamma Knife), and after that, actual neurosurgery. So far I am 100% happy with the drug's effectiveness.
I hope it works for you too. Sorry to hear you most likely have TGN, but you might as well know about it sooner than later, so you can treat it. You know, I have broken bones, sustained concussions, had major skin lacerations from a car wreck, all sorts really painful injuries in my life, but the pain from all those things combined is not as bad as the pain from TGN. It was pretty disheartening to be diagnosed with TGN, and when I discovered the condition's other title-"The Suicide Disease", I was asking WTF did I ever do to deserve all this.
I hope your pain from TGN is finally gone for good,