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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.
Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
This portrait of Thomas Jefferson is considered an accurate likeness, painted when he was thirty-sev
Joseph Moore and His Family (1839), by Erastus Salisbury Field, reflects the emerging middle-class f
Harriet Beecher Stowe’s novel, Uncle Tom’s Cabin, became a staple of the mid-nineteenth-century thea


