300-600mg PO q6-8h (immediate-release) or q12h (ER)
IV<unk>  no longer recommended for use inpatient or in<unk> e ED due to lack of added benefit over other treatments and high risk of adverse events
Theophylline
Beclomethasone
Budesonide
Fluticasone propionate
Albuterol
Salmeterol
Montelukast
Caffeine