How Do I Know If I Have Heartburn?
Frequent heartburn - defined as occurring two or more days a week – is a burning discomfort in the chest or throat that occurs when harsh stomach acid comes in contact with the delicate lining of the esophagus, irritating it.
Heartburn affects different people in different ways. But the symptoms of heartburn are generally described as:
- A burning pain that begins in the chest or at the breastbone and moves up toward the throat.
- A feeling that food is coming back into the mouth.
- An acidic or bitter taste at the back of the throat.
- An increase in severity of pain when you’re lying down or bending over.
- Pain that usually comes after meals.

^ IQVIA ProVoice Survey, 2005-2025.
†Pharmacy Times 2025-2026 Survey of Pharmacists’ OTC Recommendations
* Zero heartburn is possible with Prilosec OTC. Not for immediate relief. Take one pill per day as directed to treat frequent heartburn. May take 1 to 4 days for full effect. Do not take for more than 14 days or more often than every 4 months unless directed by a doctor. Use as directed.
** PG Calculation based in part on Buying Households reported by the Nielsen Company through its Homescan Panel service in the US for Prilosec OTC for the period of 8/31/03 through 6/25/16

