Get a FREE Prilosec OTC Sample Pack by completing a simple form and submitting it! Note: select 2-3 days per week for both to qualify. Also Zero Heartburn is possible while taking Prilosec OTC. However, use as directed for 14 days to treat frequent heartburn. Do not take for more than 14 days or more often than every 4 months unless directed by a doctor. This item is not for immediate relief. If you filled this out before it may not let you do it again.