SubstanceWiki

About

SubstanceWiki is a free encyclopedia of psychoactive substances built for harm reduction. It covers 381 substances with dosage tables, duration timelines, 14,967 interaction safety ratings, 240+ subjective effects, experience reports, and community insights. One interconnected reference instead of 15 open tabs across different sites. Built with Next.js and PostgreSQL. All content is CC-BY-SA licensed.