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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.