I'm horrible with trying to remember to take pills and you really do have to be regular with Claritin for it to be any good, at least that's how it was for me. I take Allegra now and it's a world of difference for me. Of course, if I stop taking it for a few days at a time and then go back, I'll still feel a little crappy that first day but the next, I'm usually good to go. If I have a really bad congestion day, I'll take some sudafed too, since I don't take Allegra-D which has that in there already.