You know, my daughter has a hard time falling asleep on the Zyrtec too. I asked my pediatrician about this and he poo-pooed me, saying he had never heard of anything like that. I’ve tried giving it to her in the morning with the same result. I stopped giving it to her for a while, but recently started it back up again, with the same results. After reading your post about the reflux flaring, I’m wondering if this is the reason my daughter is having a terrible time now. Ugh, this is so frustrating! I hate playing the guessing game.
Since this is an old post, has your LO gotten better with the Zyrtec or did you have to discontinue it?