So, I'm on a combination of Lamictal and Keppra to control my epilepsy. I've read that you should not take anticonvulsants with antihistamines, as it can react with increased drowsiness, as well as lower the effectiveness. But what about if I actually take Nyquil when it's supposed to be used: at night. Right now I'm in the middle of a very irritating cold, and have been taking Dayquil for it.

I just want to make sure whether taking Nyquil before bed will or will or will not have any repercussions the next day.