Dec 14 (Reuters) - Acura Pharmaceuticals Inc ACUR.O :
* Acura Pharmaceuticals says FDA confirmed company's stated
direction to reformulate ltx-04 to provide greater levels of
drug in blood stream
* Acura Pharmaceuticals - in study ap-ltx-400, ltx-04
tablets delivered about 50% of maximum drug concentration in
blood stream
* Acura Pharmaceuticals Inc says U.S. FDA has provided
company with advice on continued development of its product
candidate ltx-04
* Says FDA's advice also identified longer term studies
necessary for submitting a new drug application for ltx-04
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