The #1 doctor reccomended OTC Acid Reflux reducer. Prilosec OTC is strong enough to fight heartburn before it begins. It’s the only over-the-counter PPI (proton pump inhibitor) clinically proven to block heartburn for 24 hours. And that means with 1 pill a day for 14 days, you get the relief you need from the pain of frequent heartburn.* And, while taking Prilosec OTC, heartburn won’t keep coming back. True Free Sample