836. Lorazepam is used as pre-operative medication, and prior to chemotherapy, it causes sedation, memory loss, and decrease anxiety.
837. Cocaine is a vasoconstrictor, slows its own absorption, so it acts longer.
838. Diethylstilbestrol is the first synthetic estrogen.
839. Carbidopa prevents the degradation of levodopa in the periphery, so more levodopa crosses BBB to convert into dopamine.
840. Hyoscyamine is twice potent as atropine.
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