Johns Hopkins University
The goal of this laboratory study is to establish whether and which microdoses of psilocybin are safe to administer at home to healthy participants. Eligible participants will be given ascending doses of psilocybin trihydrate and a single, interspersed, randomized placebo on separate days in double-blind fashion. The participants will be asked to complete questionnaires and undergo safety assessments.
This study aims to enroll 20 healthy participants who will complete all study procedures. Participants will undergo a standard screening procedure. Baseline measures will be completed before the first dose. Participants will then be given ascending doses of psilocybin trihydrate (1.2 mg, 2.0 mg, 3.0 mg, and 4.2 mg) and a single, interspersed, randomized placebo on separate days in double-blind fashion at the research site. A 1 mg dose of psilocybin anhydrate is equivalent to a 1.19 mg dose of psilocybin trihydrate (used in this study). For each session, participants will be assessed with crite…
Inclusion Criteria: * 21 to 60 years old * Have given written informed consent * Have at least a high-school level of education or equivalent (e.g. GED) and be fluent in English * Be healthy and psychologically stable as determined by screening for medical and psychiatric problems via a personal interview, a medical questionnaire, a physical examination, an electrocardiogram (ECG), and routine medical blood and urinalysis laboratory tests * Agree to refrain from using any psychoactive drugs, including alcoholic beverages and nicotine, within 24 hours of each drug administration. The exception…
Microdoses of psilocybin trihydrate will be administered to participants (1.2 mg, 2.0 mg, 3.0 mg, and 4.2 mg).
Participants will receive a capsule identical in appearance to the active drug that contains an inactive substance.
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