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Caffeine

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Duration

4 sources

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StimulantXanthines

Also known as Caffeine

For the coffee plant, see Coffea (botany). Summary sheet: Caffeine

Addiction potential
develop with regular consumption, leading to cravings and withdrawal effects upon sudden cessation, but has low abuse potential
Toxicity
The LD50 of caffeine in humans is dependent on individual sensitivity, but is estimated to be about 150 to 200 milligrams per kilogram of body mass or roughly 80 to 100 cups of coffee for an average adult
Tolerance
full tolerance develops with prolonged and repeated use; half after 3 - 7 days; baseline after 1 - 2 weeks

Insufflated

Route dataPsychonautWiki

Dose
WeakerStronger
ThresholdLightCommonStrongHeavy
2.5 mg10–25 mg25–40 mg40–80 mg80 mg+
0100 mg
LightCommonStrongHeavy
Duration
ShorterLonger
Onset0.5–2 minutes
Come-up0.5–2 minutes
Peak0.5–1 hours
Offset6–10 hours
Total1–2.5 hours
After-effects6–24 hours
OnsetCome-upPeakOffset

Oral

Route dataPsychonautWiki

Dose
WeakerStronger
ThresholdLightCommonStrongHeavy
10 mg20–50 mg50–150 mg150–500 mg500 mg+
0625 mg
LightCommonStrongHeavy
Duration
ShorterLonger
Onset5–10 minutes
Come-up10–60 minutes
Peak1–2 hours
Offset6–10 hours
Total2–5 hours
After-effects2–4 hours
OnsetCome-upPeakOffset

Smoked

Route dataPsychonautWiki

Dose
WeakerStronger
ThresholdLightCommonStrongHeavy
25 mg25–75 mg75–125 mg125–175 mg175 mg+
0218.75 mg
LightCommonStrongHeavy
Duration
ShorterLonger
Onset2–5 minutes
Peak10–20 minutes
Offset30–45 minutes
Total45–70 minutes
After-effects2–4 hours
OnsetCome-upPeakOffset
Plan when to take Caffeine — see where onset, peak and comedown land on the clock

Source: PsychonautWiki — Caffeine ↗

Fact-sheets from PsychonautWiki. Harm-reduction reference only — not medical advice.