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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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Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.
The skull of Sahelanthropus tchadensis is argued to be the earliest of the hominins and one of only
Saint Thomas Aquinas (1225–1274). Aquinas was a Christian theologian who sought to synthesize ...
Immanuel Kant (1724–1804). German philosopher considered by many to be the greatest thinker of the ...
Saint Anselm (1033–1109).
The transfer experiment that demonstrated the existence of RNA primers in DNA replication