We visited the new Walgreen's in The Palazzo on Tuesday. Mr. H was feeling a bit under the weather. We purchased some Afrin, Theraflu sinus & cold, microwave popcorn, and water. It's super convenient to have a Walgreen's on the strip and no need to pay casino prices. It's huge and they sell whatever you might need or forgot.
p.s. they also sell Vegas memorabilia: shot glasses, shirts, hats, calendars.