Sodium Thiopental is one heck of an interesting drug. You probably recognize it as the "truth serum". Did you know it’s also the first of three drugs administered in an execution by lethal injection? The ampule contains 1 gram of the drug. A typical dose in a medical setting would be somewhere in the 200-400mg range for a normal sized adult. The dose delivered for a lethal injection would typically be about 5 of these ampules.
It’s a rapid-onset, and short-acting barbiturate general anesthetic. In small doses, it tends to make people agreeable, and talkative. In larger doses, it makes you go night-night.
This ampule was manufactured way back in 1956.
via Flickr http://flic.kr/p/omnb8M