Cimetidine is an acid reducer active ingredient available in over-the-counter (OTC) medicines that relieve or prevent heartburn symptoms associated with acid indigestion and sour stomach. Cimetidine is part of a group of acid reducers called histamine-2 antagonists, or H2 blockers. Cimetidine is approved by the U.S. Food and Drug Administration (FDA) and is safe and […]

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