Prolonged apnea, tachyphylaxis, transient fasciculation, rhabdomyolysis, myoglobinemia & myoglobinuria. Transient rise in intragastric pressure secondary to fasciculation of abdominal muscle. Transient increase in IOP. Increase in plasma-K conc. Bradycardia, other arrhythmias, hypotension, cardiac arrest. Tachycardia & increase in BP. Increase in salivary, bronchial & gastric secretion. Flushing, skin rash, bronchospasm & shock. Prolonged resp depression.