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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
More than 4.4billion prescriptions were dispensed within the United States in 2016.
The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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