I remember a flu medicine commercial from the mid or late (I believe late) '90s, that basically goes like this:
A woman knows her friends are preparing a surprise party for her, and she's getting ready. But the night before the party, she comes down with a terrible case of the flu, and is in bed. Fortunately, she takes the flu medicine (I don't remember the brand - but possibly Tylenol Cold & Flu) and miraculously she's better and able to go to the party like nothing was wrong.
I know I'm hazy on the details, but remember seeing the commercial a couple times during episodes of Seinfeld when that show was still running.
If anyone knows the brand, or can post the commercial, it would be greatly appreciated.