The Psychedelic Handbook
A Practical Guide to Psilocybin, LSD, Ketamine, MDMA, and DMT/Ayahuasca
Our Review
The Psychedelic Handbook takes a substance-by-substance approach, devoting chapters to each major psychedelic class with consistent coverage of pharmacology, subjective effects, therapeutic applications, risks, and practical safety guidelines. Strassman — who administered approximately 400 doses of DMT to 60 volunteers in his landmark University of New Mexico studies (1990–1995) — positions himself explicitly as "neither advocate nor foe," and notably dedicates more space to risks and adverse reactions than to benefits. This balanced stance is unusual and valuable in a field where most popular books lean toward advocacy.
What distinguishes this from other guides in the database is its breadth — covering nine substance classes in one volume — and its clinical authority. Strassman writes as a physician-researcher, not a journalist or advocate. The microdosing sections, while not the primary focus, provide substance-specific dosing guidance that goes beyond generic protocols. The limitation is that the 216-page format means each substance gets relatively brief treatment; readers seeking deep dives on any single substance will need supplementary sources.
For microdosing practitioners, this is the most practical cross-substance reference in the database. If you microdose psilocybin but are curious about LSD microdosing, or want to understand how ketamine's mechanism differs from classical psychedelics, this book provides the comparative framework in an accessible, safety-first format. We recommend it as a desktop reference that complements the more specialized titles already in the collection.
Key Takeaways
- ✓ Different psychedelic substance classes work through fundamentally different pharmacological mechanisms — psilocybin and LSD primarily activate 5-HT2A serotonin receptors, while ketamine blocks NMDA glutamate receptors, and MDMA primarily triggers serotonin release — understanding these differences is essential for safe microdosing across substances
- ✓ Serotonin syndrome is a genuine risk when combining psychedelics with SSRIs, MAOIs, or other serotonergic medications — Strassman provides specific drug interaction warnings that every microdoser taking psychiatric medications should know
- ✓ HPPD (Hallucinogen Persisting Perception Disorder) is rare but real, and Strassman covers risk factors and management strategies that are absent from most popular psychedelic books
- ✓ Microdosing dosage ranges vary significantly by substance — what constitutes a microdose of psilocybin (0.05–0.3g dried mushroom) is a completely different pharmacological intervention than a microdose of LSD (5–20μg) or ketamine, and treating them as interchangeable is a safety error
- ✓ The "therapeutic window" for psychedelics is narrow in specific ways — too little may produce no effect, too much may produce overwhelming or destabilizing experiences, and the optimal dose varies by individual, substance, and intention
Who Should Read This
Microdosers who work with or are curious about multiple substances and want a single, medically-informed reference covering safety, pharmacology, and practical guidance across the major psychedelic classes. Also valuable for therapists, harm-reduction workers, and anyone who wants a balanced, physician-authored overview that takes risks as seriously as benefits.
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