If you have heartburn, this one is for you! With one Prilosec OTC pill a day, you can treat frequent heartburn symptoms. That way you can power on with your day - and rest at night - without concern that your frequent heartburn will flare up. To get your Free Sample of Prilosec OTC from Costco, all you have to do is go to their site and click on "Get A Sample" and fill up the form!