In {TAIL ~ certain embodiments}, the compounds of the invention have equal or greater HDL raising ability than niacin while having less or no propensity to induce flushing, an undesirable side effect of niacin itself when used in doses sufficient to raise {HEAD ~ serum HDL levels} 
In { TAIL ~ certain embodiments } , the compounds of the invention have equal or greater HDL raising ability than niacin while having less or no propensity to induce flushing , an undesirable side effect of niacin itself when used in doses sufficient to raise { HEAD ~ serum HDL levels }
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