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Effect Index

Effect Index, is a resource dedicated to establishing the field of formalised subjective effect documentation. It is the home of the Subjective Effect Index (SEI), which contains 233 effect descriptions that exist to serve as a comprehensive map of all potential experiences that can occur under the influence of any class of psychoactive compound, particularly hallucinogens.

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Substance Summaries

Hallucinogenic substance classes, broken down and described

For more, see the articles section.

Featured Effects

A selection of subjective effects that best represent the SEI

For more, see the Subjective Effect Index.

Featured Article

Analyses that go beyond individual subjective effects

Dissociative Intensity Scale

Thursday, April 22 2021 · 7 min read

Inspired by the Shulgin Rating Scale, this article attempts to model the overall dissociative experience as a systematic progression of six levels.

For more, see the articles section.

Featured Replications

Artistic representations of specific subjective effects

Welcome back! We've been expecting you!

A replication of an Autonomous entity

by Symmetric Vision

For more, see the replications gallery.

Featured Reports

Recommended firsthand accounts of hallucinogenic experiences

DiPT

70 mg oral

Extreme Psychosis

by Cocoanatta

Combination

2C-E

25mg Oral

Combination

Ayahuasca

2.5g Syrian Rue / 6g Mimosa hostilis rootbark Oral

4-HO-MET

100mg Oral

Ayahuasca

2.5g Syrian Rue / 6g Mimosa hostillis Oral

Nightmares in Eiriel

by Sedric Lightbury

DPH

2000mg Oral

For more, see the reports section.