|group2 = Substances |list2 = * [[Special:MyLanguage/Caffeine|Caffeine]] * [[Special:MyLanguage/Alcohol|Alcohol]] * [[Special:MyLanguage/Cannabis|Cannabis]] * [[Special:MyLanguage/Stimulants|Stimulants]] * [[Special:MyLanguage/Modafinil|Modafinil]] * [[Special:MyLanguage/Antidepressants|Antidepressants]] * [[Special:MyLanguage/Herbal supplements|Herbal supplements]]
|group2 = Substances |list2 =