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.
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Very interesting!
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Answers by country

heroin
cocaine
morphine
codeine
answers
flagPakistan
9%
77%
6%
4%
44
flagthe Netherlands
24%
68%
3%
3%
29
flagCanada
6%
64%
10%
18%
48
flagRepublic of Ireland
16%
64%
13%
5%
37
flagGermany
15%
62%
9%
11%
863
flagthe United Kingdom
25%
60%
8%
4%
170
flagAustria
16%
60%
13%
10%
115
flagthe United States
17%
57%
13%
9%
289
flagSwitzerland
15%
57%
12%
14%
78
flagthe Philippines
16%
55%
16%
5%
18
flagPoland
28%
53%
9%
7%
20397
flagItaly
28%
52%
8%
12%
25
flagAustralia
25%
49%
13%
11%
51
flagEgypt
20%
46%
26%
6%
15
flagGreece
33%
44%
0%
22%
18
flagUnknown
18%
43%
12%
25%
16
flagNigeria
13%
39%
39%
8%
23
flagNorway
38%
38%
16%
5%
18
flagMalaysia
23%
38%
30%
7%
13
flagIndia
19%
36%
31%
11%
169