A member asked:

Can you please explain why serotonin effecting (serotonergic) drugs cause pupils to get so huge?

A doctor has provided 1 answer
Dr. Alan Ali answered

Specializes in Psychiatry

Serotonin & Mydriasi: Ssris inhibit the reuptake of serotonin, leading to excess serotonin present, which stimulates the sympathetic nerves supplying the iris muscles in the eyes, causing the pupils to dilate.

Answered 6/26/2013

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