Wal-Mart is offering a free sample for Prilosec OTC. The official description follows:

There’s a reason 10 million heartburn sufferers have trusted Prilosec OTC to block heartburn before it begins. Since the beginning, we’ve led the way in OTC frequent heartburn treatments. We were first on the market and have continued to provide relief to heartburn sufferers with our trusted formula. For nearly 5 years now, Prilosec OTC has been in the strongest class of one-pill-a-day heartburn medicine available over the counter. We are the #1 doctor recommended OTC acid reducer

Get your free sample of Prilosec here.