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
25%
66%
3%
3%
27
flagCanada
6%
63%
10%
19%
47
flagRepublic of Ireland
16%
63%
13%
5%
36
flagGermany
16%
61%
9%
11%
803
flagthe United Kingdom
26%
60%
8%
4%
165
flagAustria
18%
57%
13%
10%
104
flagSwitzerland
16%
56%
14%
12%
71
flagthe United States
18%
55%
14%
9%
267
flagthe Philippines
16%
55%
16%
5%
18
flagPoland
28%
53%
9%
7%
20231
flagItaly
29%
50%
8%
12%
24
flagAustralia
25%
49%
13%
11%
51
flagEgypt
20%
46%
26%
6%
15
flagGreece
33%
44%
0%
22%
18
flagUnknown
18%
43%
12%
25%
16
flagNorway
35%
41%
17%
5%
17
flagNigeria
13%
39%
39%
8%
23
flagMalaysia
23%
38%
30%
7%
13
flagIndia
19%
35%
31%
11%
167