I have been wondering about the meds in Canada and if they are the same formulation as the ones in the USA. We bought a bottle of Benadryl when we were there recently. I took a dose of it a week ago, and it does not taste like the Benadryl that we have been buying for the last ten+ years. It tastes like paregoric(sp?) that my father used to give me when I was a child, and I've heard that prescription drug is no longer sold or has been changed for some reason.
I'm not familiar with benedryl but some OTC drugs are different in Canada than the US. Not all of the drugs are approved in Canada that are approved in the US so the formulas will differ between the two countries.
My relatives from California always stock up on pain killers with codeine when they visit Canada because it is available over the counter here.
Apparently in California you need to have a prescription and it is much more expensive.