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Medicineworld.org: Cognitive impairment with H2 Blockers

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Cognitive impairment with H2 Blockers




Long-term use of histamine2 receptor antagonists (H2A), one class of drugs that blocks stomach acid, may be linked to cognitive impairment in older African-American adults. As per an Indiana University School of Medicine and Regenstrief Institute study reported in the recent issue of the Journal of the American Geriatrics Society, the risk for showing signs of cognitive impairment is 2.5 times greater for patients using these medications long-term.



Cognitive impairment with H2 Blockers

These acid blockers, including ranitidine and famotidine, are among the most popular medications prescribed in the United States. More than 16 million prescriptions were dispensed in 2005 and several of these medications are also available over-the-counter. The drugs are sold under brand names such as Axid, Pepcid, Tagamet and Zantac, and are used to treat ulcers, acid reflux and other gastrointestinal disorders.

The five-year observational study included 1,558 cognitively normal African-Americans aged 65 and older. After controlling for other possible factors, nearly 18 percent of H2A users studied exhibited signs of cognitive impairment.

Taking these medications continuously appears to put older African-Americans at greater risk for the development of cognitive impairment, said Malaz Boustani, M.D., MPH, assistant professor of medicine at the IU School of Medicine and a Regenstrief research scientist. Dr. Boustani is lead author of the study. We need to study this further to determine how acid blockers might be causing or creating this effect and if it occurs only in African-Americans.


Posted by: Sue    Source




Did you know?
Long-term use of histamine2 receptor antagonists (H2A), one class of drugs that blocks stomach acid, may be linked to cognitive impairment in older African-American adults. As per an Indiana University School of Medicine and Regenstrief Institute study reported in the recent issue of the Journal of the American Geriatrics Society, the risk for showing signs of cognitive impairment is 2.5 times greater for patients using these medications long-term.

Medicineworld.org: Cognitive impairment with H2 Blockers

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