Trazodone may help obstructive sleep apnea patients to stick to their therapy, but optimal
dosing is unknown. This study looks at what dose of trazodone has the best balance of
potential benefits to side-effects in people with obstructive sleep apnea who are either
starting on positive airway pressure therapy or not adherent to it. Participants will be
randomly assigned to one of three groups: trazodone 50 mg, trazodone 100 mg, or placebo for
14 days. The investigators will monitor side-effects and adherence to positive airway
pressure therapy.