Beasley, Allen, Crow, Methvin, Portis & Miles, P.C.

Lawsuits began last month for four people who say the prescription bowel cleanser OsmoPrep caused them kidney damage that resulted in dialysis. OsmoPrep, made by Salix Pharmaceuticals, is a type of laxative called oral sodium phosphate, or OSP, used to cleanse the intestines prior to procedures such as colonoscopy. Salix Pharmaceuticals began marketing OsmoPrep in 2006. The drug generated more than $30 million in sales in 2008.

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The Food and Drug Administration (FDA) black box warning on oral sodium phosphates (OSPs) came late last year, but as early as 2003, doctors were beginning to make the link between OSP pills and solutions used to clear the bowel before colonoscopies and serious and permanent kidney injuries. As more and more reports of kidney damage and even complete kidney failure began to pour in to the FDA, the agency finally issued a mild warning in 2005. The black box warning on prescription OSP products would come three years later, after 21 more reports of serious kidney injuries. Soon after that FDA warning, C.B. Fleet quickly pulled its over-the-counter OSP products off the market.

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