New guidelines by Global Initiative for<unk>  (GINA) 2019 endorse the use of an ICS-LABA combined product as both rescue and maintenance inhaler based off of a 2018 meta analysis 
GINA recommends budesonide or beclomethasone as the inhaled corticosteroid, and formoterol as the long acting beta agonist. The only U.S. formulation meeting this recommendation is Symbicort (budesonide-formoterol).
Beclometasone 100-250 mcg bid
Beclometasone 100-500 mcg BID AND
Salmeterol inhaled 50 mcg bid
Beclometasone 1mg BID (high dose) AND
Salmeterol inhaled 50 mcg BID AND (if needed)
theophylline, leukotriene antagonist, or PO prednisolone with taper
Acute asthma exacerbation
Pulmonary
COPD exacerbation
Airway obstruction
Acute chest syndrome
Anaphylaxis
Acute dyspnea
Angioedema