Pupil dilation

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Pupil dilation (also called mydriasis) is the enlargement of the size of a person's pupils under normal lighting conditions. Normally, the pupil size increases in the dark and shrinks in the light; however, a dilated pupil will remain excessively large even in a bright environment. This effect generally occurs on drugs which increase overall serotonin levels including psychedelics, dissociatives, deliriants, entactogens, various stimulants and some anti-depressants.

Experience reports

Anecdotal reports which describe this effect within our experience index include:


Psychoactive substances

Compounds within our psychoactive substance index which may cause this effect include:



See also

External links