The health and nutrition store GNC says it now plans to voluntarily stop selling the dietary supplement OxyELITE Pro in its Hawaii stores.  Yesterday, the store told the Honolulu Star-Advertiser the Ala Moana Center GNC did not plan to comply with the state Department of Health's request and would continue to sell the product in its stores until such time that either USPlabs or the FDA recall the product. Today GNC says while it still believes the product is safe, it will voluntarily remove the OxyELITE Pro product from sale in its Hawaii stores during the investigation.