But the segue of the discussion to Rx medicines is fine with me--I didn't mean to limit it to the OTC one, but that was my initial question.

By themselves, Allegra isn't that expensive, and Sudafed is darned cheap. But combined, and with the Allegra as a quick release and the sudafed as timed release, it works well. I get too revved up if I try to take a full amount of the regular Sudafed, but one tablet isn't quite enough. My son bounces off of the walls if he gets too much. The one time he had two sudafed tablets, a few hours apart, he couldn't sleep, and came in and woke me up to tell me his heart was racing. This Allegra-D doesn't do that to either of us.

BTW: we have the blessing of his pediatrician to try different antihistamines and decongestants. We tried several he had as samples, and we've tried various over the counter ones. He understands the problem my son has had, and said that whatever we tried, to be patient and give it a little time to see if it would work. This started working right away, which was wonderful. This disclaimer is for Mark Cohen, who might happen to read this thread. :)

A note of caution for some of you thinking of getting Rx's from Canada: Everything isn't always inexpensive in Canada. Find out what the U.S. price is before buying it offshore. The friend I went with last time said she discovered that after the Canadian doctor visit ($45) to get the Rx she needed in Canada for one of her regular meds, it was going to come out costing a lot more--"we get that medicine from the U.S., it isn't made in Canada" was their answer. She went back to her regular Bellingham pharmacy for that one.

SRS