About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Alexander von Middendorff
Alexander Bunge
Teresa Hubbard and Alexander Birchler, Detached Building.
Timothy O'Sullivan (negative) and Alexander Gardner (print), A Harvest of Death, Gettysburg, ...