Thanks again, guys. It's always good to know someone's reading, it helps give me the motivation to write. >>55 The first syringe was an overdose of sodium thiopental, which is a rapidly-acting anesthetic. The second syringe was potassium chloride, which stops the heart completely. From what I understand, potassium chloride injection is extremely painful, which is why they use a massive dose of sodium thiopental during executions to render the inmate unconscious for a 'humane' death.