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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
In 1864, the first barbiturate (barbituric acid) was synthesized.
Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

