My girlfriend swears she has bought these before. She always wants me to purchase Extra Strength Advil for her, but I swear for the life of me I can not find these in any pharmacy over-the-counter. I know they are available in Canada and other countries, as they show up on advil.ca and other sites, but advil.com does not list them as a product. Do they sell these in the US? Have they ever sold them?