All are side effects of succinylcholine except-
Since bradycardia with modal or ventricular escape beats may occur, especially in children, and asystole has been described after a second dose of succinylcholine in both pediatric and adult patients. Can also cause Tachycardia with catecholamine release with effect on nicotinic cholinergic receptor. But this is rare.
Hyperkalemia
Intracranial pressure
Intragastric pressure
Tachycardia
Neuromuscular Blocker