Substances
Caffeine

Caffeine is a a CNS stimulant, and also the most widely used psychoactive substance in the world. It is legal and unregulated in most parts of the world, and is found in many commonly sold products. It has a good safety profile, though regular heavy use can cause physical dependence and contribute to certain medical conditions.
Harm potential
produces dependence with chronic use and has a low abuse potential
Source: PsychonautWiki
Dosage
This dosage information is gathered from users and resources for educational purposes only. It is not a recommendation and should be verified with other sources for accuracy.
oral
light: 20-50mg
common: 50-150mg
strong: 150-500mg
insufflated
light: 10-25mg
common: 25-40mg
strong: 40-80mg
Source: PsychonautWiki
View dosage charts in the KnowDrugs app
Effects
- elevated heartrate
- increase in cognitive abilities
- physical agitation
- panicked thinking
- racing thoughts
- uncomfortable bodyload
Source: Tripsit.me
Interactions
View all interactions in the KnowDrugs app
Tolerance
full
develops with prolonged and repeated use
half
3 - 7 days
zero
1 - 2 weeks
Source: PsychonautWiki