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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.