Nasopharyngitis; dehydration; dizziness, insomnia; glaucoma, increased IOP, blurred vision; atrial fibrillation, palpitations, supraventricular tachycardia, tachycardia; HTN; cough, epistaxis, pharyngitis, dysphonia, bronchospasm, laryngitis, sinusitis; dry mouth (usually mild), constipation, oropharyngeal candidiasis, dysphagia, GERD, gingivitis, glossitis, stomatitis, intestinal obstruction including paralytic ileus; rash, pruritus, angioneurotic oedema, urticaria, skin infection & ulcer, dry skin, hypersensitivity including immediate reactions; arthralgia, joint swelling, back pain; urinary retention (usually in men w/ predisposing factors), dysuria, UTI. Arrhythmia, myocardial ischemia, angina pectoris, hypotension, tremor, headache, nervousness, nausea, muscle spasms, fatigue, malaise, hypokalaemia, hyperglycaemia, & metabolic acidosis.