Trigeminal Neuralgia - Carbamazapine Works, But Whoa I Need a Nap

I'm trying to understand the impact of the meds. I'm taking a low dose, 100mg 2 times per day. Yesterday I took with breakfast and dinner, and while that appeared to worked OK, by about 1:00pm I would have paid big money for a nap. Got hit with "the knife" a couple of times on the ride home, and ended up in bed by 8:30. Think I need to take that second dose earlier, and will try today. Just hope I can keep my head off my desk this afternoon. Wish me luck!