Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
The greenhouse effect: heat trapping by earth's atmosphere.