The bad news for heartburn sufferers, of course, is that
Zantac and its ranitidine generics have, perhaps for years, contained a
suspected carcinogen without the FDA knowing it. The good news is that
the FDA has now declared a handful of branded antacid alternatives and
their generics as safe for consumers.
The FDA Wednesday said that preliminary tests of
alternatives including Pepcid (famotidine), Tagamet (cimetidine), Nexium
(esomeprazole), Prevacid (lansoprazole) and Prilosec (omeprazole) found
no N-nitrosodimethylamine (NDMA), the suspected cancer-causing agent
found in OTC ranitidine drugs including the popular Zantac.
The announcement came as the agency said more Zantac generic makers are voluntarily calling their meds. Dr. Reddy’s Laboratories confirmed that NDMA had been found in its ranitidine products, and Perrigo has joined the recall after testing its versions.
The recent discovery of NDMA in Zantac and its generics
came after the finding last year that the impurity was being created
during the manufacturing of many high blood pressure drugs like losartan
and valsartan.
The online pharmacy Valisure, which tests all of the
products it sells, notified the FDA earlier this year that it had found a
similar manufacturing phenomenon was occurring in ranitidine drugs.
Valisure filed a citizen petition seeking to have the FDA have
drugmakers recall the suspected products, set an acceptable NDMA level
and create tests for the suspected carcinogen.
While the FDA has rejected Valisure’s testing methods, the
agency has set standards and informed drugmakers how to test for NDMA in
ranitidine. It announced Wednesday a new test using what it called “a more widely available technology than the first posted method.”
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