<unk>  is a Phosphodiesterase inhibitor that is FDA approved for the treatment of COPD exacerbations.   Common adverse reactions include diarrhea, weight loss, nausea, headache, back pain, influenza, insomnia, dizziness and decreased appetite.
Roflumilast
Tiotropium
Xamoterol
Formoterol
Arformoterol tartrate
Theophylline
Diflorasone
Fluticasone