January 10, 2013 by Holly DuceFree Sample of Prilosec OTC Sign up to receive your free sample of Prilosec OTC. With just one Prilosec OTC® pill a day, you can block frequent heartburn before it begins for a full 24 hours with zero heartburn. So you can get through the day – and rest at night – without the worry of heartburn flare-ups on your mind. ShareTweetPinYumShare0 Shares