Do not take for more than 14 days or more often than every 4 months unless directed by a doctor. May take 1 to 4 days for full effect.something that antacids just can't do. Prilosec OTC's delayed-release formula helps it pass through the tough stomach acid, preventing excess acid production to block frequent heartburn.
IQVIA ProVoice Survey, 2005 - 2022. PPIs block heartburn by preventing excess acid production. Take one pill per day as directed to treat frequent heartburn.
With one Prilosec OTC pill each morning, block your heartburn for a full 24 hours. Omeprazole blocks heartburn for a full 24 hours after taking one pill each morning.