Why certain drugs make people pupils dilate or restrict?

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Basically the title says it all. I’ve just always been curious about this since I first noticed it.

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Anonymous 0 Comments

To put it simply, it works the same way muscles contract and relax. The drug targets a receptor (I.e. a drug molecule binds to another molecule in your body) which illicits a nervous system response which causes it.

It’s actually very complex when considering all the different drugs and mechanisms, but this is the gist.

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