It works for my husband, who used to get a cold every trip.

Glad it works for him. However, that doesn't seem to hold much water with others:

http://www.npr.org/templates/story/s...oryId=87937907

http://www.webmd.com/cold-and-flu/ne...ettles-lawsuit


and lots more.

Take a 325 mg Aspirin before your flight - been shown to prevent DVTs which are more common than you might think after flights even shorter than that. (Must be aspirin, not Tylenol).