By Penelope Brewer
What is Nicotine?
The estimated lower limit of a lethal dose of nicotine is 500-1000 mg. Children may become ill after smoking just one cigarette, and severely ill if more is ingested. Initial symptoms include nausea and vomiting, excessive salivation, abdominal pain, tremor, headache, dizziness, sweating, and seizures. Long-term symptoms include hypotension, bradycardia, central nervous system depression, coma, and paralysis with difficulty breathing or respiratory failure.