<prompt> which of these is a Fda approved indication for use of modafinil as an adjunct?Major depressionNarcolepsyobstructive sleep apneashift work disorder  <response>: FDA has approved modafinil as an adjunctive treatment for obstructive sleep apnea. Remember, Continuous positive airway pressure CPAP is the treatment of choice for this disorder.Modafinil is approved only as adjunctive treatment. 