Diuretics best pick for blood pressure / Common water pills outperform pricey drugs in big study. ... About 24 million Americans take blood pressure medications at an annual cost of $15.5 billion.

Also known as "water pills," these drugs help your kidneys get rid of extra water and salt from your body through your urine. Because you have less fluid in your blood vessels, your blood pressure ...

Prescription and over-the-counter drugs often have unique names, spelled in weird ways. It's a thorough process, with more rules than you might think.