All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using COPD:
Headache; nausea; upset stomach.
Cardiovascular
Cardiovascular side effects have included palpitations, tachycardia, extrasystoles, flushing, hypotension, circulatory failure, and ventricular arrhythmias.
Endocrine
Endocrine side effects have included hyperglycemia and inappropriate ADH syndrome.
Gastrointestinal
Gastrointestinal side effects have included nausea, vomiting, epigastric pain, hematemesis and diarrhea.
Nervous system
Nervous system side effects have included headache, irritability, restlessness, insomnia, hyperexcitability, agitation, muscle twitching, and generalized clonic and tonic convulsions.
Renal
Renal side effects have included albuminuria, diuresis and both gross and microscopic hematuria.