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US FDA Questions Valisure’s Zantac Carcinogenicity Findings

 
• By Bowman Cox

As ranitidine suspensions and recalls mount worldwide, US agency says heat of pharmacy lab's test made nitrosamine levels appear high.

formula
differences emerge over test methods

Amid a global rush to judgment among several regulatory authorities, pharmaceutical companies, chain drugstores and trial lawyers on the potential carcinogenicity of ranitidine, the US Food and Drug Administration remains a conspicuous holdout.

Now the agency is questioning the third-party test results obtained by an online pharmacy, Valisure LLC, that set the recalls in motion. Valisure is an online pharmacy with a laboratory...

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