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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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Illicit drug use costs the United States approximately $181 billion every year.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.