Approved for Use(s) treats frequent heartburn (occurs 2 or more days a week) not intended for immediate relief of heartburn; this drug may take 1 to 4 days for full effect. Omeprazole irreversibly inhibits the hydrogen/potassium ATPase enzyme (proton pump) in gastric parietal cells, blocking the final step of acid production and reducing gastric acid secretion. Side effects, costs, interactions,…
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