|
|
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.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.
The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.
![Internal view of the heart illustrating the heart chambers, heart layers, and major blood vessels as](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_22_08_851775.jpeg)
![Atherosclerosis. (a) A sectioned coronary artery that exhibits an accumulation of fatty plaque, whic](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_14_25_100211581.jpeg)