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bella donna is the popular name for Hyoscine. It gets its name as women used to use it and drop it into their eyes, making their pupils dilate (get bigger) which was popular at the time, hence the name "beautiful lady", or bella donna. Now hyoscine is used to relieve stomach cramps and nausea and is also used for travel sickness. It works by blocking the muscarinic receptors in you body, including those in the vomit centre hence reducing the chances of vomitting. It also relaxes smooth muscle in your body, so there is pupil dilation, reduced stomach cramping and vasodilation.
Thats pretty much all I remember about it from Pharmacology.
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**Man I'm Pretty**
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