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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).
For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.
The horizontal fraction bar was introduced by the Arabs.
Illicit drug use costs the United States approximately $181 billion every year.
Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.