Caffeine is arguably the most popular drug in America. But what do you really know about it? This short video explains how the beloved stimulant became the key ingredient in top-selling soft drinks and how those drinks came to be blended with foreign-made synthetic caffeine. It also examines the regulatory mess surrounding this potentially lethal drug in the U.S.
This is Episode 2 of Post Script: Curious Stories of the Unexpected. Watch the entire series here.