<p>The signs and symptoms of overdose are those of hyperthyroidism - agitation, confusion, irritability, hyperactivity, headache, sweating, mydriasis, tachycardia, arrhythmias, tachypnoea, pyrexia, increased bowel movements and convulsions. Cerebral embolism, shock, coma, and death have been reported. Symptoms may not necessarily be evident or may not appear until several days after ingestion of Levothyroxine Sodium. Dose of Levothyroxine Sodium should be reduced or temporarily discontinued if signs or symptoms of overdosage occur. Treatment is symptomatic.</p>