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%
4%
4%
42
flagRepublic of Ireland
14%
76%
0%
9%
21
flagSwitzerland
17%
65%
4%
13%
23
flagthe Netherlands
28%
64%
7%
0%
14
flagthe United Kingdom
26%
61%
7%
3%
114
flagGermany
19%
58%
5%
15%
244
flagItaly
35%
57%
0%
7%
14
flagthe Philippines
18%
56%
18%
6%
16
flagCanada
10%
55%
20%
15%
20
flagPoland
29%
53%
9%
7%
18639
flagthe United States
19%
53%
16%
8%
212
flagAustralia
25%
50%
12%
12%
40
flagEgypt
14%
50%
28%
7%
14
flagNigeria
20%
50%
20%
10%
10
flagGreece
35%
47%
0%
17%
17
flagAustria
16%
46%
10%
26%
30
flagUnknown
18%
43%
12%
25%
16
flagNorway
41%
41%
16%
0%
12
flagMalaysia
20%
40%
30%
10%
10
flagIndia
18%
38%
31%
9%
131