Nasopharyngitis, pneumonia, bronchitis, flu, UTI, sinusitis; cough, dyspnoea; back pain; dry mouth. Arrhythmia, myocardial ischemia, angina pectoris, hypotension, tremor, headache, nervousness, nausea, muscle spasms, fatigue, malaise, hypokalemia, hyperglycemia, metabolic acidosis.