Asthenia, edema, postural hypotension, hypokinesia, involuntary muscle contraction, spasm (generalized), tremor, syncope, arrhythmia, extrasystoles, atrial fibrillation, cardiac arrest, ileus, elevated bilirubin, confusion, apnea, bronchospasm, dyspnea, pulmonary edema, resp insufficiency, increased sweating, skin discoloration.