7 doctors weighed in:

What is the difference between tagamet (cimetidine) and Pepcid (famotidine)?

7 doctors weighed in
Dr. Charles Cattano
Internal Medicine - Gastroenterology
4 doctors agree

In brief: Very little

Tagamet (cimetidine), zantac (ranitidine), Pepcid (famotidine) are h2-receptor blockers, introduced by prescription in late 70's/early 80's.
All reduce acid production dose-dependently, & promote drug tolerance (requiring increasing doses of drug to block increasing # of receptors with chronic use). Otc dosing is a fraction of original prescription doses. Similar side effects, efficacy, duration.

In brief: Very little

Tagamet (cimetidine), zantac (ranitidine), Pepcid (famotidine) are h2-receptor blockers, introduced by prescription in late 70's/early 80's.
All reduce acid production dose-dependently, & promote drug tolerance (requiring increasing doses of drug to block increasing # of receptors with chronic use). Otc dosing is a fraction of original prescription doses. Similar side effects, efficacy, duration.
Dr. Charles Cattano
Dr. Charles Cattano
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Dr. Jason Hemming
Internal Medicine - Gastroenterology
1 doctor agrees

In brief: Same class

Same class of medication so very similar.

In brief: Same class

Same class of medication so very similar.
Dr. Jason Hemming
Dr. Jason Hemming
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