Which drug makes your pupils larger?

heroin
cocaine
morphine
codeine
Dilated pupils typically occur as an effect of taking stimulant drugs such as cocaine and amphetamine, while opiates such as heroin, morphine and codeine constrict the pupils.
Przemek
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Very interesting!
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Answers by country

heroin
cocaine
morphine
codeine
answers
flagPakistan
7%
80%
5%
5%
40
flagGermany
22%
63%
5%
7%
93
flagSwitzerland
27%
63%
0%
9%
11
flagthe Philippines
10%
60%
20%
10%
10
flagthe United Kingdom
26%
59%
9%
3%
87
flagItaly
35%
57%
0%
7%
14
flagthe United States
18%
54%
16%
7%
174
flagPoland
29%
52%
9%
7%
17402
flagCanada
11%
50%
22%
16%
18
flagEgypt
16%
50%
25%
8%
12
flagUnknown
18%
43%
12%
25%
16
flagGreece
50%
40%
0%
10%
10
flagAustralia
17%
39%
21%
21%
23
flagIndia
16%
38%
33%
10%
105