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In 1864, the first barbiturate (barbituric acid) was synthesized.
Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).
There are more nerve cells in one human brain than there are stars in the Milky Way.