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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
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.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
If you could remove all of your skin, it would weigh up to 5 pounds.
More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.