However, one fan took to Reddit to point out that her reference is not quite on the money.
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They said: “Contrary to popular belief, heroin does not cause mydriasis, but in fact causes the exact opposite: miosis, or pinpoint pupils (for the layman).”
Heroin is actually an opiate, which causes pupils to constrict.
The Redditor continued: “The drug she was looking for would be cocaine. It causes dilated pupils.”