"Overview of Heartburn
The esophagus is a tube that connects the mouth to the stomach. It is made of muscles that work to push food toward the stomach in rhythmic waves. Once in the stomach, food is prevented from refluxing (moving b"...
Reported acute ingestions orally of up to 20 grams have been associated with transient adverse effects similar to those encountered in normal clinical experience. The usual measures to remove unabsorbed material from the gastrointestinal tract, clinical monitoring and supportive therapy should be employed.
There have been reports of severe CNS symptoms, including unresponsiveness, following ingestion of between 20 and 40 grams of cimetidine, and extremely rare reports following concomitant use of multiple CNS-active medications and ingestion of cimetidine at doses less than 20 grams. An elderly, terminally ill dehydrated patient with organic brain syndrome receiving concomitant antipsychotic agents and Tagamet (cimetidine) 4800 mg intravenously over a 24-hour period experienced mental deterioration with reversal on Tagamet (cimetidine) discontinuation.
There have been two deaths in adults who were reported to have ingested over 40 grams orally on a single occasion.
Tagamet (cimetidine) is contraindicated for patients known to have hypersensitivity to the product.This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 1/12/2005
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