TiHKAL

TiHKAL is a 1997 book by Alexander and Ann Shulgin that explores the chemistry and effects of tryptamine compounds. The work serves as a sequel to their previous book PiHKAL and maintains a similar two-part structure. The first section combines autobiographical narrative with essays covering diverse topics like psychotherapy, DMT in nature, and drug policy. The second section contains detailed chemical information and synthesis instructions for 55 psychedelic compounds, including original discoveries by Alexander Shulgin. The authors chose to make the technical portion freely available online while restricting the biographical content to the printed edition. This decision came partly in response to increased DEA scrutiny of Shulgin's research, including a 1994 laboratory raid. The book represents both a scientific reference work and a statement about academic freedom and the right to pursue research into psychoactive substances. Through its dual format, it bridges the gap between technical chemistry and human experience.

Readers appreciate TiHKAL's combination of biographical narratives and scientific details on tryptamines. The chemistry sections provide research value, while the love story adds human interest. Positive points from readers: - In-depth chemistry and synthesis information - Personal accounts add context and relatability - Better organized than PiHKAL - Thorough index and references Common criticisms: - Writing can be dry and technical in places - Personal narrative portions feel slow to some - Less comprehensive than PiHKAL - Some find the romantic sections self-indulgent Ratings: Goodreads: 4.34/5 (350+ ratings) Amazon: 4.7/5 (100+ reviews) Notable reader quote: "A remarkable blend of love story and chemistry textbook. The technical information could feel overwhelming without the human story woven throughout." - Goodreads reviewer Another reader notes: "More approachable than PiHKAL but lacks some depth in the chemistry sections." - Amazon review

PiHKAL by Alexander Shulgin A chemist documents the synthesis and effects of phenethylamine compounds through scientific notes and personal experiences.

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The Doors of Perception by Aldous Huxley A writer records observations of consciousness and perception through a scientific lens.

DMT: The Spirit Molecule by Rick Strassman The text presents clinical research findings on dimethyltryptamine through medical documentation and subject reports.

Organic Chemistry by Jonathan Clayden and Nick Greeves This work presents synthesis methods and molecular structures with technical detail and reaction pathways.

🔬 The book's title "TiHKAL" stands for "Tryptamines I Have Known And Loved," following the naming pattern of their previous work "PiHKAL" (Phenethylamines I Have Known And Loved) 🎓 Alexander Shulgin, often called the "Godfather of Psychedelics," held a Ph.D. in Biochemistry from UC Berkeley and discovered over 230 psychoactive compounds during his career 🌿 Many tryptamines discussed in the book naturally occur in various plants and fungi, including DMT which is found in hundreds of plant species worldwide 📚 The book is actually divided into two distinct parts: Book I ("The Story") and Book II ("The Chemistry"), with the latter containing detailed synthesis instructions for 55 psychoactive compounds 🔋 Shulgin developed a unique rating system called the "Shulgin Rating Scale" to measure the potency and effects of psychoactive substances, which is used throughout the book to describe experiences