Tremors (particularly the hands), nervousness, dizziness, headache, tachycardia, palpitations, peripheral vasodilation, increased coughing, hoarseness, hypokalemia, hypersensitivity (anaphylaxis, angioedema, bronchospasm, collapse, hypotension, oropharyngeal edema, rash, urticaria), central nervous stimulation, vertigo, angina, paradoxical bronchospasm, cardiac arrhythmias (including atrial fibrillation, supraventricular tachycardia, and extrasystoles). Syr: Conjunctivitis; erythema multiforme, SJS; increased appetite; hyperactivity; central nervous stimulation; mydriasis; myocardial ischemia; epistaxis, hypotension, pallor; epigastric pain, stomachache; feeling of muscle tension, muscle cramps; increased sweating. Pulmoneb: sleeplessness/insomnia, chest pain, HTN, wheezing, asthma exacerbation, bronchitis, nasal congestion, rhinitis, pharyngitis, sinusitis, viral infection, increased hemoptysis in patients w/ pre-existing hemoptysis, otitis media, nausea, vomiting, diarrhea, hypertonia, asthenia, back pain, fever, lymphadenopathy, dry mouth.