The Nature of Drugs, Volume Two: Alexander Shulgin's Lectures on Pharmacology, Drug Categories, History, and Social Freedom

Alexander Shulgin's The Nature of Drugs, Volume Two presents lectures recorded during his 1987 San Francisco State University classes, continuing the series with an inquiry into what qualifies as a drug. The book examines stimulants, depressants, intoxicants, deliriants, prescription drugs, peyote, psychedelics, cannabis, and LSD, alongside their chemical makeup, effects, cultural history, drug testing, and the social and individual freedoms associated with medicinal and exploratory use. It is described as a chemistry-focused educational work that combines Shulgin's humor and perspective with illustrations by Donna Torres and an afterword by David E. Presti. The volume continues the lectures from Volume One rather than beginning with Chapter 1 and was published as a new shipping book in 2023.