NBTY Inc. said Thursday it will sell or close seven out-of-state manufacturing, packaging and distribution facilities.

The Ronkonkoma-based vitamin and health supplement manufacturer said in a regulatory filing the facilities are in California, New Jersey and North Carolina. "We made a decision to close facilities that we see as being underutilized and we're going to transfer that work to some of our larger operation centers across the country," NBTY spokeswoman Andrea Staub said.

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The company uses those locations to manufacture and distribute private label products, which are sold bearing other companies' labels.

Some of the roughly 650 people who work at those facilities can apply for positions at the company's other locations, Staub said. The closures will cost the company between $30 million and $45 million.