Is this illegal? Drugs/Airport Question?

Okay. Loaded question. My mom is headed to China soon. She has an old Aunt there who is ill and in pain, and they want a medication Tylenol No. 2 (acetaminophen/codeine/caffiene). It's sold OTC in Canada and not sold in the states I believe.

My first question is… If I visit Canada, purchase some, and bring it back, am I committing a crime?
My second question is… If I complete said task, and my mom packs it in her luggage to the airport… Will she get in trouble for having narcotics or something? I mean, are the dogs going to sniff it out and yada yada. I don't want to risk it unless I know it isn't illegal

If it has a pharmacy label stuck on it with your mothers name typed on then it is fully legal as medication.

We've loaded suitcases with Aleve to take to Lithuania because they don't have it there. Your biggest problem is getting it across the border from Canada, I think. They confiscate stuff- like Kinder Eggs. Would you be driving? Put it between some clothes in a suitcase.
I'm surprised she can't get it in China. When I took students to China, they got excellent healthcare, and some medications that aren't available in the States.

You could also put it in regular Tylenol bottles.

First, are you sure its not available in China? May be called something different. But yes, buying narcs with out a Rx,1, is illegal; transporting them across the border 2, may be illegal, and 3, giving them to someone with out a Rx is illegal. (in the US) China may also frown on bringing them into the country in any quantity. And if she is found to have narcs in any suspicious quantity that ate not prescribed to her, yes your mom can get into some real trouble.