Dulera consists of an inhaled corticosteroid and a long-acting beta agonist, and shares an active ingredient with Merck's Asmanex and Nasonex (mometasone furoate), and Foradil (formoterol fumarate). Dulera carries FDA's most severe safety warning, the black box label, which in this case warns patients about the potential for asthma-related death associated with long-acting beta agonists, or LABAs.
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