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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
People about to have surgery must tell their health care providers about all supplements they take.
There are more bacteria in your mouth than there are people in the world.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.