LOUISVILLE, Ky. (WDRB) -- Louisville-based PharMerica Corp. (NYSE: PMC) has been sued by one the nation's biggest operators of nursing homes, Brookdale Senior Living, in a business dispute over drug prices.

PharMerica, an institutional pharmacy, provides prescription and over-the-counter drugs to more than two dozen Brookdale assisted-living facilities and nursing homes across the country, according to the suit, which was filed Sept. 24 in Jefferson County Circuit Court.

Brookdale alleges PharMerica "wrongly" and "unilaterally" changed its drug pricing structure with the Brookdale facilities, resulting in "artificially inflated prices" paid by Brookdale since Sept. 26, 2009.

The suit does not specify the amount of damages Brookdale seeks except to list 26 claims, each involving at least $5,000, on behalf of Brookdale facilities from Denver to San Antonio to Charlotte.

PharMerica executive vice president David Froesel did not return a call for comment Wednesday.

Andrea Turner, public relations manager at Brookdale's headquarters in Brentwood, Tenn., declined to comment.

PharMerica had not filed a response in court as of 11:30 a.m. Wednesday.

PharMerica employs about 285 people at its Jeffersontown-area headquarters, 1901 Campus Place, according to a business database maintained by the state Cabinet for Economic Development.

Brookdale operates more than 650 "independent living, assisted living, and dementia-care communities and continuing care retirement centers" in 36 states, with the ability to serve over 67,000 residents, according to the company's website.

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