Randy Hatton and Leslie Hendeles spent nearly two decades trying to convince the Food and Drug Administration that phenylephrine, a drug commonly used in cold medicines, was ineffective. In September, an advisory panel finally agreed. Now, some of the medicines are being pulled from store shelves.Further Reading: - If Some Cold Medicines Don’t Work, What Should You Take for a Stuffy Nose?  - CVS Pulls Certain Cold Medicines From Shelves and Will Stop Selling Them  - These Are the Two Scientists Taking Down Cold Medicines That Don’t Work  Learn more about your ad choices. Visit megaphone.fm/adchoices