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

One of the hottest topics in nephrology over the past few years has been the epidemiologic and histopathologic studies that suggest a link between oral sodium phosphate (OSP) colonoscopy preparations and a serious form of kidney injury known as acute phosphate nephrology, according to The Renal Fellow Network.

As more cases of the condition were reported to the Food and Drug Administration (FDA), the agency last December issued a black box warning on prescription brands of OSP, such as Visicol and Osmo Prep. C.B. Fleet, makers of over-the-counter OSPs, also pulled their products from store shelves. While the Fleet products were deemed safe when taken in low doses as a laxative, Fleet had recommended doctors to tell their patients to use the over-the-counter OSPs in higher doses to prep the bowel prior to colonoscopies.

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