Twenty-seven years ago, Don Hayes was practicing acupuncture in the Colorado foothills when his wife, Hannah, a teacher with an interest in Chinese herbal remedies, began mixing formulas for specific clients. Her own tendency to come down with colds increased her zeal. "And finally," she says, "because we're a little slow, we said, hey, we're making the same formula for everyone." That formula was Cold Snap, a potent cure that can now be found in more than 500 stores nationwide, from the counterculture Alfalfa's to the mainstream Walgreen's. Snifflers, what are you waiting for?