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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.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
People about to have surgery must tell their health care providers about all supplements they take.
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
![Daniel Burnham’s Flatiron Building (1902) was one of the first to use steel girders to hold up the b](https://biology-forums.com/gallery/47/medium_6_24_08_15_12_36_54_224241797.jpeg)
![On March 25, 1911, as scores of young factory girls leaped to their deaths from the eighth, ninth, a](https://biology-forums.com/gallery/47/medium_376716_26_08_15_11_19_27_22455374.jpeg)