Some of you guys are making the mistake of caring what the pharmacist thinks. It is not illegal to buy and unless you are buying too much they really shouldn't bother to ask. I have asthma and I maybe buy 3 to 4 boxes a year. Rarely do I go to the same place since there are so many around that sell it. I have never been asked why I am buying it and if I did I would simply say I have asthma end of story. Stop being so defensive.
One time I went into buy it and the pharmacist told me not to worry about signing the book. He just rolled his eyes and said it was a pain in the ass the have to keep track of the stuff. I told him that I was shocked that a product like Primatine inhaler was on the shelves, which is basically adrenaline and Primatine tabs (ephedrine) had to be signed for. He was in total agreement and I think kinda shocked as I am sure he never really thought about it before.