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Doctor insights on: Cimetidine H2 Receptor Blocker

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Can I take anything like cimetidine or other h2 antagonists for allergies?

Can I take anything like cimetidine or other h2 antagonists for allergies?

Not for allergies: H2 antagonists partially block acid secretion in the stomach. They don't do much (if anything) for allergies. I would use either oral H1 antihistamines (zyrtec, Allegra etc.), nasal sprays or eye drops. If these are not effective I would recommend seeing an allergist and considering allergy shots. ...Read more

Receptor (Definition)

An organ, cell or molecule that accepts an outside signal and causes an internal change. Eyes receive light, touch receptors send messages to the brain when stimulated by pressure and estrogen receptors bind Estradiol causing responses of normal breast, ovary and uterus cells to rising and falling levels of the female steroid hormones. Most of the time "receptor" refers to one ...Read more


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What is the use of tagamet (cimetidine)?

What is the use of tagamet (cimetidine)?

Reduces stomach acid: Tagamet ( cimetidine) reduces production of stomach acid through blocking h2 receptors on the gastric parietal cell. This helps reduce aid indigestion / heartburn and can help heal erosions of the lining of either the esophagus or stomach. The h2 blockers are not as potent as the proton pump inhibitors such as omeprazole. ...Read more

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Is cimetidine safe for treating moluscum contagiosum in children?

Is cimetidine safe for treating moluscum contagiosum in children?

Molluscum: Molluscum is caused by a virus and is a self-limited skin infection, meaning that it will resolve on its own, but can take a very long time. There are several treatments that are successful (freezing, imiquimod, etc) in shortening the course of skin lesions. Cimetidine may help, but there are potential side effects w cimetidine. Talk w your PCP or dermatologist to see which treatment is best. ...Read more

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10mg citalopram safe to take with tagamet (cimetidine)?

Should be okay: I think that the combination of citalopram 10 mg with tagamet (cimetidine) should be okay. Stay safe! ...Read more

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Could it be right that tagamet (cimetidine) helps with shingles?

Could it be right that tagamet (cimetidine) helps with shingles?

Tagamet (cimetidine): I have not heard of any good clinical evidence that tagament has been indicated for the treatment of shingles. ...Read more

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

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. ...Read more

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What is the treatment for cimetidine overdose?

What is the treatment for cimetidine overdose?

Take a deep breath: Any time there is over ingestion of a medication, poison control is the most important and accurate source of information. They are available 24/7. You could also call your doctor or local er but i would avoid internet doctoring/ search engine shopping. ...Read more

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Can you tell me about tagamet 300 (cimetidine)?

Stomach acid reducer: Tagamet (cimetidine) is one of the older drugs used for stomach and duodenal ulcers. Before tagamet (cimetidine) persons on occasion had to have part of their stomach surgically removed to treat ulcers. Tagamet (cimetidine) significantly reduced stomach acid production allowing the ulcer to heal. It is not quite as strong for a better word as say Prilosec which blocks all acid production but at a low cost tagamet (cimetidine) 300 may be just fine. ...Read more

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Can you tell me about taking tagamet 300 (cimetidine)?

Can you tell me about taking tagamet 300 (cimetidine)?

An old acid blocker: 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. ...Read more

Dr. Margaret Bia
134 doctors shared insights

Cimetidine (Definition)

Cimetidine is a H2 receptor blocker which is a kind of ...Read more


Dr. Katharine Cox
58 doctors shared insights

Tagamet (Definition)

Tagamet is a H2 receptor blocker which is a kind of ...Read more